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Diff for /loncom/homework/functionplotresponse.pm between versions 1.27 and 1.52

version 1.27, 2010/11/07 12:28:28 version 1.52, 2011/01/26 20:20:50
Line 31  use strict; Line 31  use strict;
 use Apache::response();  use Apache::response();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::lonnet;  use Apache::lonnet;
    
 BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline','functionplotrule'));    &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline',
                                                               'functionplotrule','functionplotruleset',
                                                               'functionplotelements'));
 }  }
   
 #  #
Line 45  sub geogebra_startcode { Line 47  sub geogebra_startcode {
     my ($id)=@_;      my ($id)=@_;
     return (<<ENDSTARTCODE);      return (<<ENDSTARTCODE);
 <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar"  <applet name="ggbApplet_$id" code="geogebra.GeoGebraApplet" archive="geogebra.jar"
          codebase="/adm/geogebra/"  width="714" height="447" MAYSCRIPT>           codebase="/adm/geogebra/"  width="722" height="447" MAYSCRIPT>
        <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>         <param name="java_arguments" value="-Xmx512m -Djnlp.packEnabled=true"/>
 ENDSTARTCODE  ENDSTARTCODE
 }  }
Line 59  sub geogebra_endcode { Line 61  sub geogebra_endcode {
 #  #
 sub geogebra_spline_program {  sub geogebra_spline_program {
     return (<<ENDSPLINEPROGRAM);      return (<<ENDSPLINEPROGRAM);
 <param name="ggbBase64" value="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"/>  <param name="ggbBase64" value="UEsDBBQACAAIANOAcz0AAAAAAAAAAAAAAAASAAAAZ2VvZ2VicmFfbWFjcm8ueG1s7Vxtb6tGGv3c/grEh1Vuu4njlzje2/hW5b1Sb3ulu1qttGorYhPHrQ0WJomnv74zA9hxgGuGNfYYnw/JYDwM8ByYM545z7n7fjWfKc9euJwG/lBtX12riuePgvHUnwzVp+jhcqB+/+Hru4kXTLz70FUegnDuRkO1e9VVldVy+t4Pfnbn3nLhjrzPo0dv7v4UjNyIt/YYRYv3rdbLy8tVevxVEE5ak0l0tVqO6fHzmb8cqsnGe9rc1kEvXV69c33dbv33409x85dTfxm5/shTFXpdc3cUBspoPmYXMVQ/L2ZT3+uoShQEs5xdjjdbrHf971P7n8pn+vepQ8vOr6oyHQW+NZ157JKWj8HLj/6/6UGaGw7VKHzy1PSEP/qLp0hxr4fqD6ritmnh0rIzVDVadGnhqq207i9P0bryc1JbS2o/82r0pEva/IgFTYmmUXx+9yl6DEK2NXYjtofW9Gbe3PMjJSILumcRTP1IVWbuvTdjV/Lh66/u2FUrwf0f3ihKrjn9/sGdLT12vq/u6Pd6MAtChTZP8Z7w//f8vztbPLp0iz4HvOrMJV6oPLsz9m2yhzb3MRh7W3tdfzrnqCvLyFuwBto0hAvPGycPVXzJdGNBm+QP16sLGgVBOF4qq/jEChmqPVb+FR/Lq/Cb/Tz9Kzlt9/XeiMxeX81dK4nTjohpjYhY54ARo4/5/x2yzs2NPEHrH+Ixa0rQevsO2moRektGPGkk3PvfV5R/Vot482L1ThkqFxQs5Rtl9dtF9+r6nXKpdNPPHfb5W6XNCrrj4gf2Kf72YlO986b6Kqns0u/4EReX22f4dvsMcXUtt+3tKqxF7Z2qtDJPxMOTz7t3detOM49FHPa0Dn9I6up+GAPG4ESP09GfPgWCPmavngW24UzHY48NC0pBRzbQETHoiAh0RAw6shs6IgodOWHoRsF87vpjxeejI/0pfPZ0N4y85dT1+W1N14Mb/g5G7+JBC0eVf6Ajlyge53C2dnuvuoLg1WhHi0+dnDAT2BE79Wh96jXHVKRl3kXWFt5+tfB+nIZhEL4JKx8ssmFgNmTuP9xFsPzuy4F7y8nJMTseybpZZsMTlym7dvZEFCViqiUx1TIx1SrEVJMupte1hvQ/9N5yHtMkCOkvnMzT+vzlmD7Hra4f1Ocjj4OyI5l0zLxpSrhrTZqND1qy/7RnW3dqvAL9uRpGnxgiMT9uv+VCmGhbmGhZTDQxTDRgEmOiFWDSev3jnH3mv+mLJh662YmHbnbioftm4oGWXVp29zsBwXlZp8UNLUrPR8RH68nRmJ/A/ATmJzA/cRpBw/wE5icwP4H5CcxPfOnN+AIT6I0YcLz9IVEnd+pN4c5+7dx5P1pzJ9sU5c78TrKAO5Pusix36ru5U2ct6uU6YH6np9sB50JHNtAJc6cAdEQMOrIbOiIK3ZlwJ38HU+7kqIpwp6ZX4k6tIsNIwp2Y28fc/snN7eeGVE9CqmdCqlcIqS5dSOt9SrFcguWS88akaLmkBCb6FiZ6FhNdDBMdmMSY6HtZwupll7B62SWsXsESFi17tOzVupSluP2hatDilhaVV7bi1oykNax0FY1KsNKFlS6sdMkVNKx0YaULK11Y6cJKF1a6sNKFlS6sdGGlCytdWOk6CHcajeDO/gG502gKdw5q587ReM2dbFOUO/M7yQLuTLrLstxp7OZOg7VolOuA+Z2ebgecCx3ZQCfMnQLQETHoyG7oiCh0Z8Kd/B1MuZOjKsKdulGJO/WKDCMJd0IlApUIVCJQieSG1EhCamRCalQIqSFdSHu1hhTCGwhvzhsTCG/kw6RIeFMCE2MLEyOLiSGGiQFMYkyMvYihbrJiqJusGOpmhxiKlje0vDmkKEpxB0PVpMW/aLE3jVTcupm0Ds1U0RgdmilopqCZkito0ExBMwXNFDRT0ExBMwXNFDRT0ExBMwXNFDRT0ExBMwXNFDRT0ExBMwXNlITcaTaCOwcH5E6zKdzZvq6dPMfemjzZpih55veSBeSZ9JdlydPcTZ4ma9Es1wPzOz3dHjgXOrKBTpg8BaAjYtCR3dARUejOhDz5O5iSJ0dVhDwNsxJ5GhUpRhLyhOAYguMaYgrBMQTH5y44zg2pmYTUzITUrBBSU7qQ9msNKTTch9RBQsMtHybQcMuHCTTc8mFSpOEugYm5hYmZxcQUw8QEJjEm5l509f2srr6f1dX3S+rqadmnZf+I+nraBm3LYiVtzKpNcB+fz0rPBwV+0Y9WKPChwIcCX66gQYEPBT4U+FDgQ4EPBT4U+FDgQ4EPBT4U+FDgQ4EPBT4U+FDgQ4EPBT4U+BJyJxT4otwJBT4U+FDgQ4EvC3RQ4B+NPK1GkGf7kAvrVmPYc+/rxJku2HtYsyfbFGXP/G6ygD2TDrMse1q72dNiLVrlumB+p6fbBedCRzbQCbOnAHREDDqyGzoiCt2ZsCd/B1P25KiKsKdpVWJPsyLHSMKeyF9D/loNMUX+GvLXkL+G/LVDhNRKQmplQmpVCKklXUgHtYYUKYGVh6lICWwEJkgJlA8TpATKhwlSAuXDpCglsAQm1hYmVhYTSwwTC5jEmFh7SdO8zaZp3mbTNG8F0zRpeUvLW5nSNekGbc1mJW3OPlz+ZnIFdnoFyOgsmsZBRicyOpHRKVfQkNGJjE5kdCKjExmdyOhERicyOpHRiYxOZHQioxMZncjoREYnMjqR0YmMTmR0SsidyOgU5U5kdCKjExmdyOiUBTpkdB6NPJHRiYxOZHQioxMZnScLHTI6j8aedjPY85AiK7sx7Fm/YOhhsmZPtinKnvndZAF7Jh1mWfa0d7OnzVq0y3XB/E5PtwvOhY5soBNmTwHoiBh0ZDd0RBS6M2FP/g6m7MlRFWFPy67EnlZFjpGEPeGHAD+EGmIKPwT4IcAPAX4I8EOQ3Q8hN6R2ElI7E1K7Qkht6ULarpef4DFReegPj4lGYAKPCfkwgceEfJjAY0I+TOAxIR8mRR4TJTCxtzCxs5jYYpjYwCTGxC7ARMz3Y5D1/RhkfT8GFX0/aDmg5UBq/w+6QdtzWEkbdI5pCJJck5NeEyxCimY2YRECixBYhMgVNFiEwCIEFiGwCIFFCCxCYBECixBYhMAiBBYhsAg5CHfCIkSUO2ERUpo7YRFyIh0wLEJOFjpYhByNO2ERIsqdsAiBRQgsQmARIgt0sAg5GnnCIkSYPWERAosQWITAIkQW6GARcjT2hEWIMHvCIgQWIbAIgUWILNDBIuRo7Ok0gz0PqRhyGsOe9UuGJo9r9mSbouyZ300WsGfSYZZlT2c3ezqsRadcF8zv9HS74FzoyAY6YfYUgI6IQUd2Q0dEoTsT9uTvYMqeHFUR9rSdSuxpV+QYSdgTBlsw2KohpjDYgsEWDLZgsAWDLRhsnZ/BVm5MnSSmTiamToWYOvLFtF6CgmlZ5Z9TMC1rBCYwLZMPE5iWyYcJTMvkwwSmZfJhAtMy+TApMi0rgYmzhYmTxcQRw8QBJjEmTgEmhUZyrYkXTLz70P3wN1BLBwgzo6j6TgoAAFNMAQBQSwMEFAAIAAgA04BzPQAAAAAAAAAAAAAAABYAAABnZW9nZWJyYV9qYXZhc2NyaXB0LmpzSyvNSy7JzM9TSE9P8s/zzMss0dBUqK7lAgBQSwcIRczeXRoAAAAYAAAAUEsDBBQACAAIANOAcz0AAAAAAAAAAAAAAAAMAAAAZ2VvZ2VicmEueG1svVfbjts2EH1OvmKg540tUqQugb1BNiiaFtugqNug6JsscW0isiiIlL0u8vEdkpJXTtIFixYFbPF25j6ckVZvHg8NHEWvpWrXEVnEEYi2UrVsd+toMA+v8ujN7cvVTqid2PYlPKj+UJp1lCySCB61fN2qD+VB6K6sxKbai0N5r6rSOG57Y7rXy+XpdFpM9AvV75a73XbxqGukPzStXkfj5DWyuyI6JQ5O45gsf//p3rN/JVttyrYSEVi9Bnn78sXqJNtaneAka7NfR1lGItgLudujojznESxvX6w6NLITlZFHoZFytgRZryNz6CLLqitbe/7Cz6C5WBNBLY+yFv06iheMZzlLC05jEidZivJUL0VrRiyxIpHZcuK2Okpx8mztzElkERilmm2JHNM0gqPUctuIdfRQNhrNk+1Dj669rLU5N8Khx40n3cgNStTyTwSjtyLw/kBFb+IbFru/12gmnswkmn74hwIncRnnYeLovzIwmeQlPLmWR/9GXj7zLsEMAnxQ+0jg82c7cnADG5epX2bjMreP4hmdvctCXET4LCI8vnE/9/86Js+lwX8ncbWc0nE1+gj03mLHPDDigNcyhqQAXjiHAEcPciAFpOghQEdyYLjO4QYySOwegwRyKHCDJMAYjtyeMu/RFDiBlEHq3Q4JA54AIYigDIDGQKmdE6AYIOAcOJJklhu1DJIUWIqrJAeGWsWISZAGpyiXQkIgsXSUW4oM0hxoCqllSVCoDS6nkMaQEsuNxcAIMCcxA5pDYunSMfZjtoz5YjPGDcwP3A+pHzIYXSrbbjBXbqwO9TQ1qrvEC9FYF56qj68T18Vp6eraSgxVI2tZth8xXBZnwwuXMmev3lTmGC0ip0elVF9vzhpjCI9/iF7hncnYImOc5yknhOQ2rc/+hBK+4FlR5GnOKccZ1iRdlTb7OFmkaZEUlOe04EWMss7TEVvwBHmlOYuLAk+9ZHHcCGOwcWgoH4WebN/1sp7Pf9B3qqkv7uiUbM27sjND73oOXu/emvS23TViY5PdJTbW/urTVj1ufIInntev5w5XsZe/3b1TjeoBrwa1rtmN49aPDmMVu6Bih4kdYuRhmV7OSUEdwo1bPzpUI1uv2mgomawk8SRGanehkfk8JZpyKxrbSoZWmvtpYWT16clSi/8wHLaYEROZZfeuV9peStuhO6WlTZW3uD858lou+T/lrpZfJ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/>
 ENDSPLINEPROGRAM  ENDSPLINEPROGRAM
 }  }
   
Line 72  sub geogebra_default_parameters { Line 74  sub geogebra_default_parameters {
         <param name="image" value="/adm/lonIcons/lonanim.gif"  />          <param name="image" value="/adm/lonIcons/lonanim.gif"  />
         <param name="boxborder" value="false"  />          <param name="boxborder" value="false"  />
         <param name="centerimage" value="true"  />          <param name="centerimage" value="true"  />
         <param name="java_arguments" value="-Xmx512m" />   <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_algos.jar, geogebra_export.jar, geogebra_javascript.jar, jlatexmath.jar, jlm_greek.jar, jlm_cyrillic.jar, geogebra_properties.jar" />
         <param name="cache_archive" value="geogebra.jar, geogebra_main.jar, geogebra_gui.jar, geogebra_cas.jar, geogebra_export.jar, geogebra_properties.jar" />   <param name="cache_version" value="3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0, 3.9.115.0" />
         <param name="cache_version" value="3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0, 3.2.44.0" />  
         <param name="framePossible" value="false" />          <param name="framePossible" value="false" />
   
         <param name="showResetIcon" value="false" />          <param name="showResetIcon" value="false" />
Line 107  sub init_script { Line 108  sub init_script {
           $script.="if (param=='applet_$id') { loaded_$id=true; }\n";            $script.="if (param=='applet_$id') { loaded_$id=true; }\n";
       }        }
       $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)).        $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)).
                ") { setTimeout('ggbInitAll()',20) }";                 ") { setTimeout('ggbInitAll()',200) }";
       my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts));         my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); 
       return (<<ENDGGBINIT);        return (<<ENDGGBINIT);
 <script type="text/javascript">  <script type="text/javascript">
Line 157  sub update_register { Line 158  sub update_register {
 }  }
   
 #  #
 # Set a coordinate variable  # Set a point coordinate variable
 #  #
 sub set_coordinate {  sub set_point_coordinate {
    my ($id,$variable,$x,$y)=@_;     my ($id,$variable,$x,$y,$fixed)=@_;
      my $mult=($fixed?'a*':'');
    return (<<ENDSETVARIABLE);     return (<<ENDSETVARIABLE);
 document.ggbApplet_$id.evalCommand("$variable=($x,$y)");  document.ggbApplet_$id.evalCommand("a=1");
   document.ggbApplet_$id.evalCommand("$variable=$mult($x,$y)");
   document.ggbApplet_$id.setLabelVisible("$variable",false);
 ENDSETVARIABLE  ENDSETVARIABLE
 }  }
   
 #  #
   # Set a slope coordinate variable
   #
   sub set_slope_coordinate {
      my ($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed)=@_;
      my $xvariable=$variable.'x';
      my $yvariable=$variable.'y';
      my $domain=$xmax-$xmin;
      my $range=$ymax-$ymin;
      my $xinterval=$domain/100.;
      my $yinterval=$range/200.;
      my $mult=($fixed?'a*':'');
      return (<<ENDSETSVARIABLE);
   document.ggbApplet_$id.evalCommand("a=1");
   document.ggbApplet_$id.evalCommand("$xvariable=Slider[$xinterval,$domain,$xinterval]");
   document.ggbApplet_$id.setVisible("$xvariable", false);
   document.ggbApplet_$id.evalCommand("$xvariable=$xrel");
   document.ggbApplet_$id.evalCommand("$yvariable=Slider[-$range,$range,$yinterval]");
   document.ggbApplet_$id.setVisible("$yvariable", false);
   document.ggbApplet_$id.evalCommand("$yvariable=$yrel");
   document.ggbApplet_$id.evalCommand("$variable=$mult($xvariable+x($pointname),$yvariable+y($pointname))");
   document.ggbApplet_$id.setLabelVisible("$variable", false);
   ENDSETSVARIABLE
   }
   
   #
 # Input field name for a coordinate variable  # Input field name for a coordinate variable
 #  #
   
Line 187  sub generate_input_field { Line 216  sub generate_input_field {
 }  }
   
 #  #
 # Initialize a new coordinate variable at set a listener on it  # Initialize a new point coordinate variable at set a listener on it
 #  #
 sub new_coordinate {  sub new_point_coordinate {
     my ($id,$variable,$x,$y)=@_;      my ($id,$variable,$x,$y,$fixed)=@_;
     if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {      if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
        $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};         $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
     }      }
Line 198  sub new_coordinate { Line 227  sub new_coordinate {
        $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};         $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
     }      }
     &generate_input_field($id,$variable,$x,$y);      &generate_input_field($id,$variable,$x,$y);
     return &set_coordinate($id,$variable,$x,$y).&update_register($id,$variable);      return &set_point_coordinate($id,$variable,$x,$y,$fixed).&update_register($id,$variable);
   }
   
   #
   # Initialize a new slope coordinate variable at set a listener on it
   #
   sub new_slope_coordinate {
       my ($id,$variable,$x,$y,$pointname,$xp,$yp,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
   #
   # $variable: name of the slope point
   # $x, $y: coordinates of the slope point
   # $pointname: name of the associated point point
   # $xp $yp: coordinates of the point point
   #
       if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')})) {
          $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')};
       }
       if (defined($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')})) {
          $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')};
       }
       if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')})) {
          $xp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'x')};
       }
       if (defined($Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')})) {
          $yp=$Apache::functionplotresponse::previous{&field_name($id,$pointname,'y')};
       }
   
       &generate_input_field($id,$variable,$x,$y);
       my $xrel=$x-$xp;
       my $yrel=$y-$yp;
       return &set_slope_coordinate($id,$variable,$xrel,$yrel,$xmin,$xmax,$ymin,$ymax,$pointname,$fixed).&update_register($id,$variable);
 }  }
   
 #  #
Line 240  ENDAXESSCRIPT Line 299  ENDAXESSCRIPT
 }  }
   
 sub axes_label {  sub axes_label {
     my ($id,$xlabel,$ylabel)=@_;      my ($id,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel)=@_;
     unless ($xlabel || $ylabel) { return ''; }      unless ($xlabel || $ylabel) { return ''; }
     my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");';      my $return='document.ggbApplet_'.$id.'.evalCommand("topRight=Corner[3]");';
     if ($xlabel) {      if ($xlabel) {
         if (($ymin<0) && ($ymax>0)) {
        $return.=(<<ENDXAXISLABELSCRIPT);         $return.=(<<ENDXAXISLABELSCRIPT);
 document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)");  document.ggbApplet_$id.evalCommand("Xlabel=(x(topRight)-AxisStepX[],AxisStepY[]/6)");
 document.ggbApplet_$id.setVisible("Xlabel",false);  document.ggbApplet_$id.setVisible("Xlabel",false);
 document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]");  document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", Xlabel]");
 ENDXAXISLABELSCRIPT  ENDXAXISLABELSCRIPT
         } else {
          $return.=(<<ENDXOFFAXISLABEL);
   document.ggbApplet_$id.evalCommand("LowerRight=Corner[2]");
   document.ggbApplet_$id.evalCommand("Text[\\"$xlabel\\", (x(LowerRight) - AxisStepX[], y(LowerRight) + AxisStepY[] / 2)]");
   ENDXOFFAXISLABEL
         }
     }      }
     if ($ylabel) {      if ($ylabel) {
         if (($xmin<0) && ($xmax>0)) {
        $return.=(<<ENDYAXISLABELSCRIPT);         $return.=(<<ENDYAXISLABELSCRIPT);
 document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)");  document.ggbApplet_$id.evalCommand("Ylabel=(AxisStepX[]/6,y(topRight)-AxisStepY[]/3)");
 document.ggbApplet_$id.setVisible("Ylabel",false);  document.ggbApplet_$id.setVisible("Ylabel",false);
 document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]");  document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", Ylabel]");
 ENDYAXISLABELSCRIPT  ENDYAXISLABELSCRIPT
         } else {
          $return.=(<<ENDYOFFAXISLABEL);
   document.ggbApplet_$id.evalCommand("UpperLeft=Corner[4]");
   document.ggbApplet_$id.evalCommand("Text[\\"$ylabel\\", (x(UpperLeft) + AxisStepX[] / 5, y(UpperLeft) - AxisStepY[] / 1.8)]");
   ENDYOFFAXISLABEL
         }
     }      }
     return $return;      return $return;
 }  }
   
 sub plot_script {  sub plot_script {
    my ($id,$function,$fixed)=@_;     my ($id,$function,$fixed,$label,$color,$xmin,$xmax,$thickness)=@_;
      $label=~s/\W//g;
      if (($label) && ($label!~/^[A-Za-z]/)) {
         $label='C'.$label;
      }
      my $visible=0;
      if ($label) {
         $visible="1";
      } else {
         $Apache::functionplotresponse::counter++;
         $label='C'.$Apache::functionplotresponse::counter;
      }
      my $rc=0;
      my $gc=0;
      my $bc=0;
      if ($color) {
         my ($rh,$gh,$bh)=($color=~/(..)(..)(..)/);
         $rc=hex($rh);
         $gc=hex($gh);
         $bc=hex($bh);
      }
    if ($fixed) {     if ($fixed) {
 # Use stupid trick to nail this to a location        return "document.ggbApplet_$id.evalCommand('$label=Function[$function,$xmin,$xmax]');\n".
 # Oddly, it seems like only one plot cannot be nailed to a location               ($visible?'':"document.ggbApplet_$id.setLabelVisible('$label', false);\n").
 # Non-nailed-down plots apparently get overwritten               ($color?"document.ggbApplet_$id.setColor('$label',$rc,$gc,$bc);\n":'').
       return (<<ENDPLOTSCRIPT);               ($thickness?"document.ggbApplet_$id.setLineThickness('$label',$thickness);\n":'');
             document.ggbApplet_$id.evalCommand("a=1");  
             document.ggbApplet_$id.setVisible("a",false);  
             // This MUST be a DEPENDENT OBJECT in order to be locked down:  
             document.ggbApplet_$id.evalCommand("y=a*($function)");  
 ENDPLOTSCRIPT  
    } else {     } else {
        return "document.ggbApplet_$id.evalCommand('y=$function')";         return "document.ggbApplet_$id.evalCommand('y=$function');\n";
    }     }
 }  }
   
Line 282  ENDPLOTSCRIPT Line 370  ENDPLOTSCRIPT
 #  #
   
 sub generate_spline {  sub generate_spline {
    my ($id,$label)=@_;     my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_;
    my $result='';     my $result='';
    my $order=$Apache::functionplotresponse::splineorder{$label};     my $order=$Apache::functionplotresponse::splineorder{$label};
    my $x=$Apache::functionplotresponse::splineinitx{$label};     my $x=$Apache::functionplotresponse::splineinitx{$label};
Line 291  sub generate_spline { Line 379  sub generate_spline {
    my $sy=$Apache::functionplotresponse::splinescaley{$label};     my $sy=$Apache::functionplotresponse::splinescaley{$label};
    my @coords=();     my @coords=();
    foreach my $i (1..$order) {     foreach my $i (1..$order) {
        $result.=&new_coordinate($id,$label.'P'.$i,$x,$y);         $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed);
          my $xp=$x;
        $x+=$sx/(2.*($order-1));         $x+=$sx/(2.*($order-1));
        push(@coords,$label.'P'.$i);         push(@coords,$label.'P'.$i);
        $result.=&new_coordinate($id,$label.'S'.$i,$x,$y+$sy);         $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed);
        $x+=$sx/(2.*($order-1));         $x+=$sx/(2.*($order-1));
        push(@coords,$label.'S'.$i);         push(@coords,$label.'S'.$i);
    }     }
Line 309  sub start_backgroundplot { Line 398  sub start_backgroundplot {
    my $result='';     my $result='';
    my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];     my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1];
    my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);     my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval);
      my $xinitial=&Apache::lonxml::get_param('xinitial',$parstack,$safeeval);
      my $xfinal=&Apache::lonxml::get_param('xfinal',$parstack,$safeeval);
      my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval);
      my $color=&Apache::lonxml::get_param('color',$parstack,$safeeval);
      $color=~s/[^a-fA-F0-9]//gs;
      unless (length($color)==6) { $color=''; }
    my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0);     my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0);
     
    unless ($function) { $function="0"; }     unless ($function) { $function="0"; }
    if ($target eq 'web') {     if ($target eq 'web') {
       $result.=&plot_script($internalid,$function,$fixed);        my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3);
         unless (defined($xinitial)) { $xinitial=$xmin; }
         unless (defined($xfinal)) { $xfinal=$xmax; }
         $result.=&plot_script($internalid,$function,$fixed,$label,$color,$xinitial,$xfinal);
    } elsif ($target eq 'edit') {     } elsif ($target eq 'edit') {
         $result=&Apache::edit::tag_start($target,$token,'Background Function Plot').          $result=&Apache::edit::tag_start($target,$token,'Background Function Plot').
              &Apache::edit::text_arg('Function:','function',               &Apache::edit::text_arg('Function:','function',
                                      $token,'16').                                       $token,'16').
                &Apache::edit::text_arg('Initial x-value (optional):','xinitial',
                                        $token,'8').
                &Apache::edit::text_arg('Final x-value (optional):','xfinal',
                                        $token,'8').
                &Apache::edit::text_arg('Label on Plot:','label',
                                        $token,'8').
                &Apache::edit::text_arg('Color (hex code):','color',
                                        $token,'8').
              &Apache::edit::select_arg('Fixed location:','fixed',               &Apache::edit::select_arg('Fixed location:','fixed',
                                   ['yes','no'],$token).                                    ['yes','no'],$token).
              &Apache::edit::end_row();               &Apache::edit::end_row();
   } elsif ($target eq 'modified') {    } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,      my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                  $safeeval,'function','fixed');                                                   $safeeval,'function','label','xinitial','xfinal','color','fixed');
     if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }      if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
   }    }
   return $result;    return $result;
Line 376  sub start_functionplotrule { Line 482  sub start_functionplotrule {
           &Apache::lonxml::warning(&mt('Rule relationship not defined.'));            &Apache::lonxml::warning(&mt('Rule relationship not defined.'));
           $relationship='eq';            $relationship='eq';
       }        }
       my $derivative=&Apache::lonxml::get_param('derivative',$parstack,$safeeval);        my $derivative=&Apache::lonxml::get_param('derivativeorder',$parstack,$safeeval);
       unless (($derivative==0) || ($derivative==1) || ($derivative==2)) {        unless (($derivative==-1) || ($derivative==0) || ($derivative==1) || ($derivative==2)) {
          &Apache::lonxml::warning(&mt('Rule derivative not defined.'));           &Apache::lonxml::warning(&mt('Rule derivative not defined.'));
          $derivative=0;           $derivative=0;
       }        }
Line 388  sub start_functionplotrule { Line 494  sub start_functionplotrule {
            $beginninglabel,             $beginninglabel,
            &Apache::lonxml::get_param('xfinal',$parstack,$safeeval),             &Apache::lonxml::get_param('xfinal',$parstack,$safeeval),
            $endinglabel,             $endinglabel,
              &Apache::lonxml::get_param('minimumlength',$parstack,$safeeval),
              &Apache::lonxml::get_param('maximumlength',$parstack,$safeeval),
            $relationship,             $relationship,
            &Apache::lonxml::get_param('value',$parstack,$safeeval)             &Apache::lonxml::get_param('value',$parstack,$safeeval),
              &Apache::lonxml::get_param('percenterror',$parstack,$safeeval)
           )));            )));
    } elsif ($target eq 'edit') {     } elsif ($target eq 'edit') {
       $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule').          $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule').
               &Apache::edit::end_row();               &Apache::edit::text_arg('Index/Name:','index',
                                        $token,'10').'&nbsp;'.
                &Apache::edit::select_arg(&mt('Function:'),'derivativeorder',
                                     [['0','Function itself'],
                                      ['1','First derivative'],
                                      ['2','Second derivative'],
                                      ['-1','Integral']],$token).'<br />'.
                &Apache::edit::text_arg('Initial x-value:','xinitial',
                                         $token,'8').
                &Apache::edit::select_or_text_arg('Initial x-value label:','xinitiallabel',
                                                  [['start','Start of Plot'],
                                                   ['end','End of Plot']],$token,'8').'<br />'.
   
                &Apache::edit::text_arg('Final x-value (optional):','xfinal',
                                         $token,'8').
                &Apache::edit::select_or_text_arg('Final x-value label (optional):','xfinallabel',
                                                  [['end','End of Plot']],$token,'8').'<br />'.
                &Apache::edit::text_arg('Minimum length for range (optional):','minimumlength',
                                        $token,'8').
                &Apache::edit::text_arg('Maximum length for range (optional):','maximumlength',
                                        $token,'8').'<br />'.
                &Apache::edit::select_or_text_arg(&mt('Relationship:'),'relationship',
                                     [['eq','equal'],
                                      ['ne','not equal'],
                                      ['ge','greater than or equal'],
                                      ['gt','greater than'],
                                      ['lt','less than'],
                                      ['le','less than or equal']],$token).
                $result.= &Apache::edit::select_or_text_arg('Value:','value',
                                                  [['undef','not defined']],$token,'8').
                &Apache::edit::text_arg('Percent error:','percenterror',
                                        $token,'8').
                &Apache::edit::end_row();
     } elsif ($target eq 'modified') {
       my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                    $safeeval,'index','derivativeorder',
                                                              'xinitial','xinitiallabel','xfinal','xfinallabel',
                                                              'minimumlength','maximumlength',
                                                              'relationship','value','percenterror');
       if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); }
    }     }
    return $result;     return $result;
 }  }
Line 457  sub start_spline { Line 605  sub start_spline {
              &Apache::edit::text_arg('Index:','index',               &Apache::edit::text_arg('Index:','index',
                                      $token,'4').'&nbsp;'.                                       $token,'4').'&nbsp;'.
              &Apache::edit::select_arg('Order:','order',               &Apache::edit::select_arg('Order:','order',
                                   ['2','3','4','5','6','7','8','9'],$token).'&nbsp;'.                                    ['2','3','4','5','6','7','8'],$token).'&nbsp;'.
              &Apache::edit::text_arg('Initial x-value:','initx',               &Apache::edit::text_arg('Initial x-value:','initx',
                                      $token,'4').'&nbsp;'.                                       $token,'4').'&nbsp;'.
              &Apache::edit::text_arg('Initial y-value:','inity',               &Apache::edit::text_arg('Initial y-value:','inity',
Line 524  sub get_answer_from_form_fields { Line 672  sub get_answer_from_form_fields {
   
 sub cubic_hermite {  sub cubic_hermite {
    my ($t,$p1,$s1,$p2,$s2)=@_;     my ($t,$p1,$s1,$p2,$s2)=@_;
    return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 5.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+     return (2.*$t*$t*$t-3.*$t*$t+1.)*$p1 + 3.*($t*$t*$t-2.*$t*$t+$t)*($s1-$p1)+
           (-2.*$t*$t*$t+3.*$t*$t)  *$p2 + 5.*($t*$t*$t-$t*$t)      *($s2-$p2);            (-2.*$t*$t*$t+3.*$t*$t)  *$p2 + 3.*($t*$t*$t-$t*$t)      *($s2-$p2);
 }  }
   
 #  #
Line 534  sub cubic_hermite { Line 682  sub cubic_hermite {
   
 sub ddt_cubic_hermite {  sub ddt_cubic_hermite {
    my ($t,$p1,$s1,$p2,$s2)=@_;     my ($t,$p1,$s1,$p2,$s2)=@_;
    return (6.*$t*$t-6.*$t) *$p1 + 5.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+     return (6.*$t*$t-6.*$t) *$p1 + 3.*(3.*$t*$t-4.*$t+1.)*($s1-$p1)+
           (-6.*$t*$t+6.*$t)*$p2 + 5.*(3.*$t*$t-2.*$t)   *($s2-$p2);            (-6.*$t*$t+6.*$t)*$p2 + 3.*(3.*$t*$t-2.*$t)   *($s2-$p2);
 }  }
   
 #  #
Line 544  sub ddt_cubic_hermite { Line 692  sub ddt_cubic_hermite {
   
 sub d2dt2_cubic_hermite {  sub d2dt2_cubic_hermite {
    my ($t,$p1,$s1,$p2,$s2)=@_;     my ($t,$p1,$s1,$p2,$s2)=@_;
    return (12.*$t-6.) *$p1 + 5.*(6.*$t-4.)*($s1-$p1)+     return (12.*$t-6.) *$p1 + 3.*(6.*$t-4.)*($s1-$p1)+
           (-12.*$t+6.)*$p2 + 5.*(6.*$t-2.)*($s2-$p2);            (-12.*$t+6.)*$p2 + 3.*(6.*$t-2.)*($s2-$p2);
 }  }
   
 #  #
Line 553  sub d2dt2_cubic_hermite { Line 701  sub d2dt2_cubic_hermite {
 #  #
 sub array_index {  sub array_index {
    my ($xmin,$xmax,$x)=@_;     my ($xmin,$xmax,$x)=@_;
    return int(($x-$xmin)/($xmax-$xmin)*400.+0.5);     if ($x ne '') {
         return int(($x-$xmin)/($xmax-$xmin)*400.+0.5);
      } else {
         return undef;
      }
 }  }
   
 #  #
Line 563  sub array_index { Line 715  sub array_index {
 sub populate_arrays {  sub populate_arrays {
     my ($id,$xmin,$xmax)=@_;      my ($id,$xmin,$xmax)=@_;
     for (my $i=0; $i<=400; $i++) {      for (my $i=0; $i<=400; $i++) {
          $Apache::functionplotresponse::actualxval[$i]=undef;
        $Apache::functionplotresponse::func[$i]=undef;         $Apache::functionplotresponse::func[$i]=undef;
        $Apache::functionplotresponse::dfuncdx[$i]=undef;         $Apache::functionplotresponse::dfuncdx[$i]=undef;
        $Apache::functionplotresponse::d2funcd2x[$i]=undef;         $Apache::functionplotresponse::d2funcd2x[$i]=undef;
Line 584  sub populate_arrays { Line 737  sub populate_arrays {
                         $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'});                          $env{'form.HWVAL_'.$id.'_'.$label.'S'.$ni.'_y'});
 # Run in small steps over spline parameter  # Run in small steps over spline parameter
             for (my $t=0; $t<=1; $t+=0.0001) {              for (my $t=0; $t<=1; $t+=0.0001) {
                 my $xi=&array_index($xmin,$xmax,&cubic_hermite($t,@xparms));                  my $xreal=&cubic_hermite($t,@xparms);
                   my $xi=&array_index($xmin,$xmax,$xreal);
                 if ($xi<$xiold) { return 'no_func'; }                  if ($xi<$xiold) { return 'no_func'; }
                 if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) {                  if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) {
                    if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; }                     if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; }
                    $xiold=$xi;                     $xiold=$xi;
                      $Apache::functionplotresponse::actualxval[$xi]=$xreal;
 # Function value  # Function value
                    $Apache::functionplotresponse::func[$xi]=&cubic_hermite($t,@yparms);                     my $funcval=&cubic_hermite($t,@yparms);
                      $Apache::functionplotresponse::func[$xi]=$funcval;
                      if (defined($funcval)) {
                         if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) {
                            $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi;
                         }
                         if ($xi>$Apache::functionplotresponse::functionplotrulelabels{'end'}) {
                            $Apache::functionplotresponse::functionplotrulelabels{'end'}=$xi;
                         }
                      }
   # Chain rule
 # dy/dx=dy/dt/(dx/dt)  # dy/dx=dy/dt/(dx/dt)
                    my $dxdt=&ddt_cubic_hermite($t,@xparms);                     my $dxdt=&ddt_cubic_hermite($t,@xparms);
                    if ($dxdt) {                     if ($dxdt) {
                       $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt;                        $Apache::functionplotresponse::dfuncdx[$xi]=&ddt_cubic_hermite($t,@yparms)/$dxdt;
                    }  # Second derivative
 # d^2y/dx^2                        $Apache::functionplotresponse::d2funcdx2[$xi]=
                    my $d2xdt2=&d2dt2_cubic_hermite($t,@xparms);                           ($dxdt*&d2dt2_cubic_hermite($t,@yparms)-&ddt_cubic_hermite($t,@yparms)*&d2dt2_cubic_hermite($t,@xparms))/
                    if ($d2xdt2) {                           ($dxdt*$dxdt*$dxdt);
                       $Apache::functionplotresponse::d2funcdx2[$xi]=&d2dt2_cubic_hermite($t,@yparms)/$d2xdt2;  
                    }                     }
                 }                  }
             }              }
Line 608  sub populate_arrays { Line 772  sub populate_arrays {
 }  }
   
 #  #
 # Implentation of <functionplotresponse>  # Implementation of <functionplotresponse>
 #  #
   
 sub start_functionplotresponse {  sub start_functionplotresponse {
Line 626  sub start_functionplotresponse { Line 790  sub start_functionplotresponse {
   $Apache::functionplotresponse::counter=0;    $Apache::functionplotresponse::counter=0;
 # Remember rules  # Remember rules
   undef @Apache::functionplotresponse::functionplotrules;    undef @Apache::functionplotresponse::functionplotrules;
   # Remember failed rules
     if ($target eq 'grade') {
        undef @Apache::functionplotresponse::failedrules;
     }
   # Delete previous awards
     undef $Apache::functionplotresponse::awarddetail;
 # Part and ID  # Part and ID
   my $partid=$Apache::inputtags::part;    my $partid=$Apache::inputtags::part;
   my $id=&Apache::response::start_response($parstack,$safeeval);    my $id=&Apache::response::start_response($parstack,$safeeval);
Line 635  sub start_functionplotresponse { Line 805  sub start_functionplotresponse {
   &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"});    &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"});
   
 # Parameters of <functionplotresponse>  # Parameters of <functionplotresponse>
   my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval);    my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval);
   $xmin=(defined($xmin)?$xmin:-10);  
   my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval);  
   $xmax=(defined($xmax)?$xmax:10);  
   my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval);  
   $ymin=(defined($ymin)?$ymin:-10);  
   my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval);  
   $ymax=(defined($ymax)?$ymax:10);  
   if ($xmax<=$xmin) {  
      &Apache::lonxml::warning('Maximum x-value needs to be larger than minimum value.');  
      $xmax=$xmin+20;  
   }  
   if ($ymax<=$ymin) {  
      &Apache::lonxml::warning('Maximum y-value needs to be larger than minimum value.');  
      $ymax=$ymin+20;  
   }  
   my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');    my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
   my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');    my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
   my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');    my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false');
Line 660  sub start_functionplotresponse { Line 815  sub start_functionplotresponse {
     $result.=&Apache::edit::start_table($token)      $result.=&Apache::edit::start_table($token)
        .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>'         .'<tr><td><span class="LC_nobreak">'.&mt('Function Plot Question').'</span></td>'
        .'<td><span class="LC_nobreak">'.&mt('Delete?').' '         .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
        .&Apache::edit::deletelist($target,$token)         .&Apache::edit::deletelist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses')
        .'</span></td>'         .'</span></td>'
        ."<td>&nbsp;"         ."<td>&nbsp;"
        .&Apache::edit::end_row()         .&Apache::edit::end_row()
Line 673  sub start_functionplotresponse { Line 830  sub start_functionplotresponse {
              &Apache::edit::text_arg('Maximum x-value:','xmax',               &Apache::edit::text_arg('Maximum x-value:','xmax',
                                      $token,'4').'&nbsp;'.                                       $token,'4').'&nbsp;'.
              &Apache::edit::select_arg('x-axis visible:','xaxisvisible',               &Apache::edit::select_arg('x-axis visible:','xaxisvisible',
                                   ['yes','no'],$token).'&nbsp;&nbsp;'.                                    ['yes','no'],$token).'<br />'.
              &Apache::edit::text_arg('Label y-axis:','ylabel',               &Apache::edit::text_arg('Label y-axis:','ylabel',
                                      $token,'6').'&nbsp;'.                                       $token,'6').'&nbsp;'.
              &Apache::edit::text_arg('Minimum y-value:','ymin',               &Apache::edit::text_arg('Minimum y-value:','ymin',
Line 681  sub start_functionplotresponse { Line 838  sub start_functionplotresponse {
              &Apache::edit::text_arg('Maximum y-value:','ymax',               &Apache::edit::text_arg('Maximum y-value:','ymax',
                                      $token,'4').'&nbsp;'.                                       $token,'4').'&nbsp;'.
              &Apache::edit::select_arg('y-axis visible:','yaxisvisible',               &Apache::edit::select_arg('y-axis visible:','yaxisvisible',
                                   ['yes','no'],$token).'&nbsp;&nbsp;'.                                    ['yes','no'],$token).'<br />'.
              &Apache::edit::select_arg('Grid visible:','gridvisible',               &Apache::edit::select_arg('Grid visible:','gridvisible',
                                   ['yes','no'],$token).                                    ['yes','no'],$token).'<br />'.
                &Apache::edit::text_arg('Background plot(s) for answer (function:xmin:xmax,function:xmin:xmax,...):',
                                            'answerdisplay',$token,'50');
   
              &Apache::edit::end_row().&Apache::edit::start_spanning_row();               &Apache::edit::end_row().&Apache::edit::start_spanning_row();
   } elsif ($target eq 'modified') {    } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,      my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                                                  $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax',                                                   $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax',
                                                            'xaxisvisible','yaxisvisible','gridvisible');                                                             'xaxisvisible','yaxisvisible','gridvisible','answerdisplay');
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }      if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
   
   } elsif ($target eq 'meta') {    } elsif ($target eq 'meta') {
        $result=&Apache::response::meta_package_write('functionplotresponse');         $result=&Apache::response::meta_package_write('functionplotresponse');
   } elsif ($target eq 'web') {    } elsif (($target eq 'answer') &&
 # paste in the update routine to receive stuff back from the applet              ($env{'form.answer_output_mode'} ne 'tex') &&
      $result.=&update_script($internalid);              ($Apache::lonhomework::viewgrades == 'F')) {
 # start the initscript for this applet        my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser();
      $result.=&start_init_script($internalid);        my $windowopen=&Apache::lonhtmlcommon::javascript_docopen();
 # put the axis commands inside        my $start_page = &Apache::loncommon::start_page('Rules Log', undef,
      $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible);                                                 {'only_body' => 1,
      $result.=&axes_label($internalid,$xlabel,$ylabel);                                                  'bgcolor'   => '#FFFFFF',
 # init script is left open                                                  'js_ready'  => 1,});
   }        my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,});
         $uname =~s/\W//g;
         $udom  =~s/\W//g;
         my $function_name =
                   join('_','LONCAPA_scriptvars',$uname,$udom,
                        $env{'form.counter'},$Apache::lonxml::curdepth);
         my $rules_var ="<script type=\"text/javascript\">
   // <![CDATA[
       function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page<pre>".
       $Apache::functionplotresponse::ruleslog.
       "<\\/pre>$end_page');newWindow.document.close();newWindow.focus()}
   // ]]>
   </script><a href=\"javascript:$function_name();void(0);\">".&mt('Rules Log')."</a><br />";
               &Apache::lonxml::add_script_result($rules_var);
           }
   
   return $result;    return $result;
 }  }
   
 sub compare_rel {  sub compare_rel {
    my ($relationship,$value,$realval,$tol)=@_;     my ($relationship,$value,$realval,$tol)=@_;
      # is the real value undefined?
   
   &Apache::lonnet::logthis("Rel $relationship Val $value RV $realval T $tol");  
 # is the real value defined?  
    unless (defined($realval)) {     unless (defined($realval)) {
   # the real value is not defined
       if ($relationship eq 'eq') {        if ($relationship eq 'eq') {
          if ($value eq 'undef') {           if ($value eq 'undef') {
             return 1;              return 1;
Line 730  sub compare_rel { Line 903  sub compare_rel {
       }        }
    }     }
   
 # it is defined.  # is the expected value undefined?
      if ($value eq 'undef') {
   # but by now we know that the real value is defined
         return 0;
      }
   
   # both are defined.
    if ($relationship eq 'gt') {     if ($relationship eq 'gt') {
       return ($realval>$value);        return ($realval>$value);
    } elsif ($relationship eq 'ge') {     } elsif ($relationship eq 'ge') {
Line 747  sub compare_rel { Line 926  sub compare_rel {
    return 0;     return 0;
 }  }
   
   sub addlog {
      my ($text)=@_;
      $Apache::functionplotresponse::ruleslog.=$text.'<br />';
   }
   
   sub actualval {
      my ($i,$xmin,$xmax)=@_;
      return $xmin+$i/400.*($xmax-$xmin);
   }
    
 sub functionplotrulecheck {  sub functionplotrulecheck {
    my ($rule,$xmin,$xmax,$tolfunc,$toldfdx,$told2fdx2)=@_;     my ($rule,$xmin,$xmax,$ymin,$ymax)=@_;
    &Apache::lonnet::logthis("Rule $rule TolFunc $tolfunc TolDfDx $toldfdx TolD2fDx2 $told2fdx2");  
    my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$relationship,$value)     my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent)
       =split(/\:/,$rule);        =split(/\:/,$rule);
 # if a hard value is set for the boundaries, it overrides the label     $percent=($percent>0?$percent:5);
    if (($xinitial ne '') && ($xinitiallabel ne '')) {     &addlog("=================");
       $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$xinitial;     &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value");
      if ((defined($minimumlength)) || (defined($maximumlength))) {
         &addlog("Minimumlength $minimumlength Maximumlength $maximumlength");
      }
      my $li=0;
      my $lh=400;
   
   # Special case: the upper boundary was not defined
   # and needs to be set to the value where
   # the condition is not true anymore => set flag
   
      my $findupper=0;
      if (($xfinal eq '')
       && (!defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}))
       && ($xfinallabel)) {
          $findupper=1;
    }     }
    if (($xfinal ne '') && ($xfinallabel ne '')) {  
       $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$xfinal;  # if a hard value is set for the boundaries, it overrides the label
      if (($xinitial ne '') && ($xinitiallabel ne '') && ($xinitiallabel ne 'start')) {
         $li=&array_index($xmin,$xmax,$xinitial);
         $Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel}=$li;
      }
      if (($xfinal ne '') && ($xfinallabel ne '') && ($xfinallabel ne 'end')) {
         $lh=&array_index($xmin,$xmax,$xfinal);
         $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$lh;
    }     }
   # if the label is defined, use it
    if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) {     if (defined($Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel})) {
       $xinitial=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel};        &addlog("Using lower label $xinitiallabel");
         $li=$Apache::functionplotresponse::functionplotrulelabels{$xinitiallabel};
      } else {
         $li=&array_index($xmin,$xmax,$xinitial);
    }     }
    if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) {     unless ($findupper) {
       $xfinal=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel};        if (defined($Apache::functionplotresponse::functionplotrulelabels{$xfinallabel})) {
            &addlog("Using upper label $xfinallabel");
            $lh=$Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}-1;
         } else {
            $lh=&array_index($xmin,$xmax,$xfinal);
         }
    }     }
 # Basic sanity checks  # Basic sanity checks
    if ($xinitial eq '') {     if ($li<0) { $li=0; }
       $xinitial=0;     if ($lh>400) { $lh=400; }
    }     if (($li>$lh) || (!defined($lh))) {
    if ($xfinal eq '') {         $lh=$li;
       $xfinal=$xinitial;     }
    }  
    if ($xinitial>$xfinal) {     &addlog("Boundaries: x=".&actualval($li,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$li]."; index $li)) to x=".
        $xfinal=$xinitial;                              &actualval($lh,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$lh]."; index $lh))");
      if ($findupper) {
         &addlog("Looking for label $xfinallabel");
      }
      my $tol=$percent*($ymax-$ymin)/100;
      if ($xmax>$xmin) {
         if ($derivative==2) {
            $tol=4.*$tol/($xmax-$xmin);
         } elsif ($derivative==1) {
            $tol=2.*$tol/($xmax-$xmin);
         } elsif ($derivative==-1) {
            $tol=$tol*($xmax-$xmin)/2.;
         }
    }     }
    &Apache::lonnet::logthis("Init $xinitial Final $xfinal");     my $integral=0;
    my $tol=$tolfunc;     my $binwidth=($xmax-$xmin)/400.;
    if ($derivative==2) {     if (($derivative<0) && (!$findupper)) {
       $tol=$told2fdx2;  # definite integral, calculate over whole length
    } elsif ($derivative==1) {       &addlog("Calculating definite integral");
       $tol=$toldfdx;       for (my $i=$li; $i<=$lh; $i++) {
    }          $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
        }
    my $li=&array_index($xmin,$xmax,$xinitial);       unless (&compare_rel($relationship,$value,$integral,$tol)) {
    my $lh=&array_index($xmin,$xmax,$xfinal);          &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol");
    for (my $i=$li; $i<=$lh; $i++) {          &addlog("Rule $label failed.");
           my $hintlabel=$label;
           $hintlabel=~s/^R//;
           push(@Apache::functionplotresponse::failedrules,$hintlabel);
           &addlog("Set hint condition $hintlabel");
           return 0;
        } 
      } else {
        for (my $i=$li; $i<=$lh; $i++) {
         my $val;          my $val;
         if ($derivative==2) {          if ($derivative==2) {
             &Apache::lonnet::logthis("Second ".  
   
 $Apache::functionplotresponse::d2funcdx2[$i-1].'__'.$Apache::functionplotresponse::d2funcdx2[$i].'__'.$Apache::functionplotresponse::d2funcdx2[$i+1]);  
            $val=$Apache::functionplotresponse::d2funcdx2[$i];             $val=$Apache::functionplotresponse::d2funcdx2[$i];
         } elsif ($derivative==1) {          } elsif ($derivative==1) {
            $val=$Apache::functionplotresponse::dfuncdx[$i];             $val=$Apache::functionplotresponse::dfuncdx[$i];
           } elsif ($derivative==-1) {
              $integral+=$Apache::functionplotresponse::func[$i]*$binwidth;
              $val=$integral;      
         } else {          } else {
            $val=$Apache::functionplotresponse::func[$i];             $val=$Apache::functionplotresponse::func[$i];
         }          }
         unless (&compare_rel($relationship,$value,$val,$tol)) { return 0; };          unless (&compare_rel($relationship,$value,$val,$tol)) { 
              &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol");
              &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)");
              if (($findupper) && ($i>$li)) {
   # Check lengths
                 unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
   # Successfully found a new label, set it
                 $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i;
                 &addlog("Rule $label passed, setting label $xfinallabel");
                 return 1;
              } else {
                 &addlog("Rule $label failed.");
                 &setfailed($label);
                 return 0; 
              }
           }
        }
    }     }
   # Corner case where this makes sense: using start or stop as defined labels
      unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; }
      &addlog("Rule $label passed.");
    return 1;     return 1;
 }  }
   
 sub end_functionplotresponse {  #
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;  # check for minimum and maximum lengths
   &Apache::response::end_response;  #
   
   my $result;  sub checklength {
   my $id=$Apache::inputtags::response[-1];      my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_;
   my $partid=$Apache::inputtags::part;      unless (($minimumlength) || ($maximumlength)) { return 1; }
   my $internalid = $partid.'_'.$id;      my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax);
       if ($minimumlength) {
          if ($length<$minimumlength) {
             &addlog("Rule $label failed, actual length $length, minimum length $minimumlength");
             &setfailed($label);
             return 0;
          }
       }
       if ($maximumlength) {
          if ($length>$maximumlength) {
             &addlog("Rule $label failed, actual length $length, maximum length $maximumlength");
             &setfailed($label);
             return 0;
          }
       }
       return 1;
   }
   
     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }  sub setfailed {
     if ($target eq 'grade'     my ($label)=@_;
          && &Apache::response::submitted()     my $hintlabel=$label;
          && $Apache::lonhomework::type eq 'exam') {     $hintlabel=~s/^R//;
      push(@Apache::functionplotresponse::failedrules,$hintlabel);
      &addlog("Set hint condition $hintlabel");
   }
   
         &Apache::response::scored_response($partid,$id);  sub start_functionplotruleset {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
      if ($target eq 'edit') {
         return &Apache::edit::start_table($token).
           '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Rule Set').'</span></td>'
          .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
          .&Apache::edit::deletelist($target,$token).'&nbsp;&nbsp;&nbsp;'.
           &Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules')
          .'</span></td>'
          ."<td>&nbsp;"
          .&Apache::edit::end_row()
          .&Apache::edit::start_spanning_row()
          ."\n";
      }
   }
   
     } elsif ($target eq 'grade'  sub end_functionplotruleset {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $id=$Apache::inputtags::response[-1];
       my $partid=$Apache::inputtags::part;
       my $internalid = $partid.'_'.$id;
   
       if ($target eq 'edit' ) {
           return &Apache::edit::end_table();
       }  elsif ($target eq 'grade'
          && &Apache::response::submitted()           && &Apache::response::submitted()
          && $Apache::lonhomework::type ne 'exam') {           && $Apache::lonhomework::type ne 'exam') {
         my ($response,%coords)=&get_answer_from_form_fields($internalid);  
         $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;  
         my %previous=&Apache::response::check_for_previous($response,$partid,$id);  
 #  #
 # Actually grade  # Actually grade
 #  #
         my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval);      my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
         $xmin=(defined($xmin)?$xmin:-10);  
         my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval);  
         $xmax=(defined($xmax)?$xmax:10);  
         my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval);  
         $ymin=(defined($ymin)?$ymin:-10);  
         my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval);  
         $ymax=(defined($ymax)?$ymax:10);  
   
         my $percent=&Apache::lonxml::get_param('percenterror',$parstack,$safeeval);  
         $percent=(defined($percent)?$percent:5);  
   
         my $tolfunc=$percent*($ymax-$ymin)/100.;  
         my $toldfdx=1;  
         my $told2fdx2=1;  
         if ($xmax>$xmin) {  
            $toldfdx=$tolfunc/($xmax-$xmin);  
            $told2fdx2=$toldfdx/($xmax-$xmin);  
         }  
   
         my $ad='';          my $ad='';
           undef  %Apache::functionplotresponse::functionplotrulelabels;
           $Apache::functionplotresponse::ruleslog='';
           $Apache::functionplotresponse::functionplotrulelabels{'start'}=400;
           $Apache::functionplotresponse::functionplotrulelabels{'end'}=0;
         if (&populate_arrays($internalid,$xmin,$xmax) eq 'no_func') {          if (&populate_arrays($internalid,$xmin,$xmax) eq 'no_func') {
            $ad='NOT_FUNCTION';             $ad='NOT_FUNCTION';
         } else {          } else {
              &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ".
                                           $Apache::functionplotresponse::functionplotrulelabels{'start'}.")");
              &addlog("End of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'end'},$xmin,$xmax)." (index ".
                                           $Apache::functionplotresponse::functionplotrulelabels{'end'}.")");
   
 # We have a function that we can actually grade, go through the spline rules.  # We have a function that we can actually grade, go through the spline rules.
            undef  %Apache::functionplotresponse::functionplotrulelabels;  
            foreach my $rule (@Apache::functionplotresponse::functionplotrules) {             foreach my $rule (@Apache::functionplotresponse::functionplotrules) {
               unless (&functionplotrulecheck($rule,$xmin,$xmax,$tolfunc,$toldfdx,$told2fdx2)) {                unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax)) {
                  $ad='INCORRECT';                   $ad='INCORRECT';
                  last;                   last;
               }                }
Line 862  sub end_functionplotresponse { Line 1150  sub end_functionplotresponse {
 # If it's not wrong, it's correct   # If it's not wrong, it's correct 
            unless ($ad) { $ad='EXACT_ANS' };             unless ($ad) { $ad='EXACT_ANS' };
         }          }
           &addlog("Set hint conditions: ".join(",",@Apache::functionplotresponse::failedrules));
           &addlog("Assigned award detail: $ad");
   # Store for later to be assigned at end_functionplotresponse
           $Apache::functionplotresponse::awarddetail=$ad;
        }
   }
   
   
   sub end_functionplotresponse {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     &Apache::response::end_response;
   
     my $result;
     my $id=$Apache::inputtags::response[-1];
     my $partid=$Apache::inputtags::part;
     my $internalid = $partid.'_'.$id;
   
       if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
       if ($target eq 'grade'
            && &Apache::response::submitted()
            && $Apache::lonhomework::type eq 'exam') {
   
           &Apache::response::scored_response($partid,$id);
   
       } elsif ($target eq 'grade'
            && &Apache::response::submitted()
            && $Apache::lonhomework::type ne 'exam') {
           my ($response,%coords)=&get_answer_from_form_fields($internalid);
           $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
           my %previous=&Apache::response::check_for_previous($response,$partid,$id);
   #
   # Assign grade
   #
           my $ad=$Apache::functionplotresponse::awarddetail;
 #  #
 # Store grading info  # Store grading info
 #  #
         $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;          $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}=$ad;
         &Apache::response::handle_previous(\%previous,$ad);          &Apache::response::handle_previous(\%previous,$ad);
    } elsif ($target eq 'web') {     } elsif ($target eq 'web') {
           undef @Apache::functionplotresponse::failedrules;
      }
      return $result;
   }
   
   sub end_functionplotelements {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result='';
     my $id=$Apache::inputtags::response[-1];
     my $partid=$Apache::inputtags::part;
     my $internalid = $partid.'_'.$id;
     if ($target eq 'edit' ) {
        $result=&Apache::edit::end_table();
     } elsif ($target eq 'web') {
        my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
   
   # Are we in show answer mode?
        my $showanswer=&Apache::response::show_answer();
        if ($showanswer) {
   # Render answerdisplay
           my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2);
           if ($answerdisplay=~/\S/s) {
              foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) {
                 my ($func,$xl,$xh)=split(/\s*\:\s*/,$plot);
                 if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; }
                 if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; }
                 $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6);
              }
           }
        }
        my $fixed=0;
        if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; }
 # Now is the time to render all of the stored splines  # Now is the time to render all of the stored splines
      foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {       foreach my $label (keys(%Apache::functionplotresponse::splineorder)) {
         $result.=&generate_spline($internalid,$label);          $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed);
      }       }
 # close the init script  # close the init script
      $result.=&end_init_script();       $result.=&end_init_script();
Line 895  sub end_functionplotresponse { Line 1248  sub end_functionplotresponse {
   }    }
   return $result;    return $result;
 }  }
   
   sub boundaries {
      my ($parstack,$safeeval,$level)=@_;
      my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval,$level);
      $xmin=(defined($xmin)?$xmin:-10);
      my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval,$level);
      $xmax=(defined($xmax)?$xmax:10);
      my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval,$level);
      $ymin=(defined($ymin)?$ymin:-10);
      my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval,$level);
      $ymax=(defined($ymax)?$ymax:10);
      if ($xmax<=$xmin) {
         $xmax=$xmin+20;
      }
      if ($ymax<=$ymin) {
         $ymax=$ymin+20;
      }
      return ($xmin,$xmax,$ymin,$ymax);
   }
   
   sub start_functionplotelements {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
      my $result='';
      my $id=$Apache::inputtags::response[-1];
      my $partid=$Apache::inputtags::part;
      my $internalid = $partid.'_'.$id;
   
      if ($target eq 'edit') {
         return &Apache::edit::start_table($token).
           '<tr><td><span class="LC_nobreak">'.&mt('Function Plot Elements').'</span></td>'
          .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
          .&Apache::edit::deletelist($target,$token).'&nbsp;&nbsp;&nbsp;'.
           &Apache::edit::insertlist($target,$token).'&nbsp;&nbsp;&nbsp;'
          .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements')
          .'</span></td>'
          ."<td>&nbsp;"
          .&Apache::edit::end_row()
          .&Apache::edit::start_spanning_row()
          ."\n";
      } elsif ($target eq 'web') {
         my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-2);
         my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
         my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
         my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval,-2)=~/on|true|yes|1/i?'true':'false');
         my $xlabel=&Apache::lonxml::get_param('xlabel',$parstack,$safeeval,-2);
         my $ylabel=&Apache::lonxml::get_param('ylabel',$parstack,$safeeval,-2);
   
   
   # paste in the update routine to receive stuff back from the applet
        $result.=&update_script($internalid);
   # start the initscript for this applet
        $result.=&start_init_script($internalid);
   # put the axis commands inside
        $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible);
        $result.=&axes_label($internalid,$xmin,$xmax,$ymin,$ymax,$xlabel,$ylabel);
   # init script is left open
     }
     return $result;
   }
   
 1;  1;
   
Removed from v.1.27  
changed lines
  Added in v.1.52

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