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Diff for /loncom/xml/lonplot.pm between versions 1.156 and 1.169

version 1.156, 2012/07/03 11:29:57 version 1.169, 2012/12/05 01:04:03
Line 98  BEGIN { Line 98  BEGIN {
 my $max_str_len = 50;    # if a label, title, xlabel, or ylabel text  my $max_str_len = 50;    # if a label, title, xlabel, or ylabel text
                          # is longer than this, it will be truncated.                           # is longer than this, it will be truncated.
   
 my %linetypes =  my %linetypes = # For png use these linetypes.
     (      (
      solid          => 1,       solid          => 1,
      dashed         => 0       dashed         => 0
     );      );
   my %ps_linetypes = # For ps the line types are different!
      (
       solid          => 0,
       dashed         => 7
      );
   
 my %linestyles =   my %linestyles = 
     (      (
Line 127  my $real_test      = Line 132  my $real_test      =
     sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};      sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
 my $pos_real_test  =  my $pos_real_test  =
     sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};      sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
 my $color_test     = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};  my $color_test;
   if ($version < 4.6) {
       $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~s/^\#/x/;$_[0]=~/^x[\da-fA-F]{6}$/};
   } else {
       $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~s/^x/#/;$_[0]=~/^\#[\da-fA-F]{6}$/};
   }
 my $onoff_test     = sub {$_[0]=~/^(on|off)$/};  my $onoff_test     = sub {$_[0]=~/^(on|off)$/};
 my $key_pos_test   = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};  my $key_pos_test   = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
 my $sml_test       = sub {$_[0]=~/^(\d+|small|medium|large)$/};  my $sml_test       = sub {$_[0]=~/^(\d+|small|medium|large)$/};
 my $linestyle_test = sub {exists($linestyles{$_[0]})};  my $linestyle_test = sub {exists($linestyles{$_[0]})};
 my $words_test     = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};  my $words_test     = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
   
   my $arrowhead_test = sub{$_[0]=~/^(nohead|head|heads| )+$/};
   my $arrowstyle_test= sub{$_[0]=~/^(filled|empty|nofilled)+$/};
   my $degree_test  = sub{&$pos_real_test($_[0]) && ($_[0] <= 360.0)};
   
 ###################################################################  ###################################################################
 ##                                                               ##  ##                                                               ##
 ##                      Attribute metadata                       ##  ##                      Attribute metadata                       ##
Line 454  my %tic_defaults = Line 468  my %tic_defaults =
  description => 'Number of minor tics per major tic mark',   description => 'Number of minor tics per major tic mark',
  edit_type   => 'entry',   edit_type   => 'entry',
  size        => '10'   size        => '10'
  },            }, 
        rotate => {
    default => 'off',
    test    => $onoff_test,
    description => 'Rotate tic label by 90 degrees if on',
    edit_type   => 'onoff'
        }
      );       );
   
 my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');  my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');
Line 528  my %axis_defaults = Line 548  my %axis_defaults =
       },        },
      );       );
   
 my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');  
   my @curve_edit_order = ('color','name','linestyle','linewidth','linetype',
    'pointtype','pointsize','limit', 'arrowhead', 'arrowstyle', 
    'arrowlength', 'arrowangle', 'arrowbackangle'
       );
   
 my %curve_defaults =   my %curve_defaults = 
     (      (
Line 589  my %curve_defaults = Line 613  my %curve_defaults =
          edit_type   => 'choice',           edit_type   => 'choice',
          choices     => ['above', 'below', 'closed','x1','x2','y1','y2']           choices     => ['above', 'below', 'closed','x1','x2','y1','y2']
          },           },
        arrowhead => {
            default     => 'head',
    test        => $arrowhead_test,
    description => 'Vector arrow head type',
    edit_type   => 'choice',
    choices     => ['nohead', 'head', 'heads']
        },
        arrowstyle => {
    default     => 'filled',
    test        => $arrowstyle_test,
    description => 'Vector arrow head style',
    edit_type   => 'choice',
    choices     => ['filled', 'empty', 'nofilled']
        },
        arrowlength => {
    default     => 0.02,
    test        => $pos_real_test,
    description => "Length of vector arrow (only applies to vector plots)",
    edit_type   => 'entry',
    size        => '5'
        },
        arrowangle  => {
    default      => 10.0,
    test         => $degree_test,
    description  => 'Angle of arrow branches to arrow body (only applies to vector plots)',
    edit_type    => 'entry',
    size         => '5'
        },
   
        arrowbackangle => {
    default    => 90.0,
    test       => $degree_test,
    descripton => 'Angle of arrow back lines to branches.',
    edit_type  => 'entry',
    size       => '5'
        }
   
      );       );
   
 ###################################################################  ###################################################################
Line 600  my %curve_defaults = Line 661  my %curve_defaults =
 undef %Apache::lonplot::plot;  undef %Apache::lonplot::plot;
 my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);  my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
   
   my $current_tics; # Reference to the current tick hash
   
 sub start_gnuplot {  sub start_gnuplot {
     undef(%Apache::lonplot::plot);   undef(%key);    undef(%axis);      undef(%Apache::lonplot::plot);   undef(%key);    undef(%axis);
     undef($title);  undef($xlabel); undef($ylabel);      undef($title);  undef($xlabel); undef($ylabel);
Line 699  sub start_xtics { Line 762  sub start_xtics {
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
  &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,   &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
     $tagstack->[-1]);      $tagstack->[-1]);
    $current_tics = \%xtics;
    &Apache::lonxml::register('Apache::lonplot', 'tic');
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result .= &Apache::edit::tag_start($target,$token,'xtics');   $result .= &Apache::edit::tag_start($target,$token,'xtics');
  $result .= &edit_attributes($target,$token,\%tic_defaults,   $result .= &edit_attributes($target,$token,\%tic_defaults,
Line 717  sub end_xtics { Line 782  sub end_xtics {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result = '';      my $result = '';
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
    &Apache::lonxml::deregister('Apache::lonplot', 'tic');
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result.=&Apache::edit::tag_end($target,$token);   $result.=&Apache::edit::tag_end($target,$token);
     }      }
Line 730  sub start_ytics { Line 796  sub start_ytics {
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
  &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,   &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
     $tagstack->[-1]);      $tagstack->[-1]);
    $current_tics = \%ytics;
    &Apache::lonxml::register('Apache::lonplot', 'tic');
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result .= &Apache::edit::tag_start($target,$token,'ytics');   $result .= &Apache::edit::tag_start($target,$token,'ytics');
  $result .= &edit_attributes($target,$token,\%tic_defaults,   $result .= &edit_attributes($target,$token,\%tic_defaults,
Line 748  sub end_ytics { Line 816  sub end_ytics {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result = '';      my $result = '';
     if ($target eq 'web' || $target eq 'tex') {      if ($target eq 'web' || $target eq 'tex') {
    &Apache::lonxml::deregister('Apache::lonplot', 'tic');
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result.=&Apache::edit::tag_end($target,$token);   $result.=&Apache::edit::tag_end($target,$token);
     }      }
     return $result;      return $result;
 }  }
   
   
   ##----------------------------------------------------------------
   #
   #  Tic handling:
   #   The <tic> tag allows users to specify exact Tic positions and labels
   #   for each axis.  In this version we only support level 0 tics (major tic).
   #   Each tic has associated with it a position and a label
   #   $current_tics is a reference to the current tick description hash.
   #   We add elements to an array  in that has: ticspecs whose elements
   #   are 'pos' - the tick position and 'label' - the tic label.
   #
   
   
   sub start_tic {
       my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style)  = @_;
   
       my $result = '';
       if ($target eq 'web' || $target eq 'tex') {
    my $tic_location = &Apache::lonxml::get_param('location', $parstack, $safeeval);
    my $tic_label    = &Apache::lonxml::get_all_text('/tic', $parser);
   
    # Tic location must e a real:
   
    if (!&$real_test($tic_location)) {
       &Apache::lonxml::warning("Tic location: $tic_location must be a real number");
    } else {
   
       if (!defined  $current_tics->{'ticspecs'}) {
    $current_tics->{'ticspecs'} = [];
       }
       my $ticspecs = $current_tics->{'ticspecs'};
       push (@$ticspecs, {'pos' => $tic_location, 'label' => $tic_label});
    }
       }
   
       return $result;
   }
   
   sub end_tic {
       return '';
   }
   
 ##-----------------------------------------------------------------font  ##-----------------------------------------------------------------font
 my %font_properties =  my %font_properties =
     (      (
Line 1408  sub start_function { Line 1519  sub start_function {
      $style);       $style);
  $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);   $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
         $function=~s/\^/\*\*/gs;          $function=~s/\^/\*\*/gs;
    $function=~ s/^\s+//; # Trim leading
    $function=~ s/\s+$//;   # And trailing whitespace.
  $curves[-1]->{'function'} = $function;    $curves[-1]->{'function'} = $function; 
     } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
  $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');   $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
Line 1587  sub get_attributes{ Line 1700  sub get_attributes{
     }      }
     return ;      return ;
 }  }
   ##
   # Generate tic mark specifications.
   # 
   # @param type - type of tics (xtics or ytics).
   # @param spec - Reference to a hash that contains the tic specification.
   # @param target - 'tex' if hard copy target.
   #
   # @return string - the tic specification command.
   #
   sub generate_tics {
       my ($type, $spec, $target) = @_;
       my $result   = '';
   
   
       if (defined %$spec) {
   
   
   
    # Major tics: - If there are 'ticspecs' these override any other
    #               specifications:
   
   
   
    $result .= "set $type $spec->{'location'}  ";
    $result .= ($spec->{'mirror'} eq 'on') ? 'mirror ' : 'nomirror ';
    if ($spec->{'rotate'} eq 'on') {
       $result .= ' rotate ';
    }
    if (defined $spec->{'ticspecs'}) {
       $result .= '( ';
       my @ticspecs;
       my $ticinfo = $spec->{'ticspecs'};
       foreach my $tic (@$ticinfo) {
    push(@ticspecs,  '"' . $tic->{'label'} . '" ' . $tic->{'pos'} );
       }
       $result .= join(', ', (@ticspecs));
       $result .= ' )';
    } else {
       $result .= "$spec->{'start'}, ";
       $result .= "$spec->{'increment'}, ";
       $result .= "$spec->{'end'} ";
    }
    if ($target eq 'tex' ) {
       $result .= 'font "Helvetica,22"';
    }
    $result .= "\n";
   
    # minor frequency:
   
    if ($spec->{'minorfreq'} != 0) {
       $result .= "set m$type $spec->{'minorfreq'}\n";
    }
       } else {
    $result .= "set $type font " . '"Helvetica,22"' ."\n";
       }
       
       
       return $result;
   }
   
 ##------------------------------------------------------- write_gnuplot_file  ##------------------------------------------------------- write_gnuplot_file
 sub write_gnuplot_file {  sub write_gnuplot_file {
Line 1648  sub write_gnuplot_file { Line 1820  sub write_gnuplot_file {
  $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.   $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
   
     }      }
       $gnuplot_input .= "set encoding utf8\n";
     # cartesian or polar plot?      # cartesian or polar plot?
     if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {      if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
         $gnuplot_input .= 'set polar'.$/;          $gnuplot_input .= 'set polar'.$/;
Line 1715  sub write_gnuplot_file { Line 1888  sub write_gnuplot_file {
     $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";      $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
     # title, xlabel, ylabel      # title, xlabel, ylabel
     # titles      # titles
     my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';      my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' offset 0, -0.5 ' : '';
     my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';      my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' offset -0.5, 0 ' : '';
   
     if ($target eq 'tex') {      if ($target eq 'tex') {
  $gnuplot_input .= "set title  \"$title\"          font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;   $gnuplot_input .= "set title  \"$title\"          font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
Line 1728  sub write_gnuplot_file { Line 1901  sub write_gnuplot_file {
         $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));          $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
     }      }
     # tics      # tics
     if (%xtics) {          $gnuplot_input .= &generate_tics('xtics', \%xtics, $target);
  $gnuplot_input .= "set xtics $xtics{'location'} ";  
  $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");      $gnuplot_input .= &generate_tics('ytics', \%ytics, $target);
  $gnuplot_input .= "$xtics{'start'}, ";  
  $gnuplot_input .= "$xtics{'increment'}, ";  
  $gnuplot_input .= "$xtics{'end'} ";  
  if ($target eq 'tex') {  
     $gnuplot_input .= 'font "Helvetica,22"';     # Needed in iso 8859-1 enc.  
  }  
  $gnuplot_input .= "\n";  
         if ($xtics{'minorfreq'} != 0) {  
             $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";  
         }   
     } else {  
  if ($target eq 'tex') {  
     $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc  
  }  
     }  
     if (%ytics) {      
  $gnuplot_input .= "set ytics $ytics{'location'} ";  
  $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");  
  $gnuplot_input .= "$ytics{'start'}, ";  
  $gnuplot_input .= "$ytics{'increment'}, ";  
         $gnuplot_input .= "$ytics{'end'} ";  
         if ($target eq 'tex') {  
             $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding.  
         }  
         $gnuplot_input .= "\n";  
         if ($ytics{'minorfreq'} != 0) {  
             $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";  
         }   
     } else {  
  if ($target eq 'tex') {  
     $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc.  
  }  
     }  
     # axis      # axis
     if (%axis) {      if (%axis) {
         if ($axis{'xformat'} ne 'on') {          if ($axis{'xformat'} ne 'on') {
Line 1842  sub write_gnuplot_file { Line 1983  sub write_gnuplot_file {
     #  type (solid/dashed), color, width      #  type (solid/dashed), color, width
     #      #
     my $linestyle_index = 50;      my $linestyle_index = 50;
     my $line_type    = '';       
     my $line_color   = '';  
     my $line_width   = '';      my $line_width   = '';
   
       # If arrows are needed there will be an arrow style for each as well:
       #
   
       my $arrow_style_index = 50;
   
     my $plot_command;      my $plot_command;
     my $plot_type;      my $plot_type;
   
Line 1855  sub write_gnuplot_file { Line 1999  sub write_gnuplot_file {
  if ($target eq 'tex') {   if ($target eq 'tex') {
     $curve->{'linewidth'} *= 2;      $curve->{'linewidth'} *= 2;
  }   }
    $line_width = $curve->{'linewidth'};
  if (exists($curve->{'function'})) {   if (exists($curve->{'function'})) {
     $plot_type    =       $plot_type    = 
  $curve->{'function'}.' title "'.   $curve->{'function'}.' title "'.
Line 1884  sub write_gnuplot_file { Line 2029  sub write_gnuplot_file {
  $curve->{'name'}.'" with '.   $curve->{'name'}.'" with '.
  $curve->{'linestyle'};   $curve->{'linestyle'};
  }   }
    my $pointtype = '';
    my $pointsize = '';
   
    # Figure out the linestyle:
   
    my $lt = $curve->{'linetype'} ne '' ? $curve->{'linetype'} 
                   : 'solid'; # Line type defaults to solid.
    # The mapping of lt -> the actual gnuplot line type depends on the target:
   
    if ($target eq 'tex') {
       $lt = $ps_linetypes{$lt};
    } else {
       $lt = $linetypes{$lt}
    }
   
    my $color = $curve->{'color'};
    $color =~ s/^x/#/;        # Convert xhex color -> #hex color.   
   
    my $style_command = "set style line $linestyle_index $pointtype $pointsize linetype $lt linewidth $line_width lc rgb '$color'\n";
    $gnuplot_input .= $style_command;
   
   
   
  if (($curve->{'linestyle'} eq 'points')      ||   if (($curve->{'linestyle'} eq 'points')      ||
     ($curve->{'linestyle'} eq 'linespoints') ||      ($curve->{'linestyle'} eq 'linespoints') ||
     ($curve->{'linestyle'} eq 'errorbars')   ||      ($curve->{'linestyle'} eq 'errorbars')   ||
     ($curve->{'linestyle'} eq 'xerrorbars')  ||      ($curve->{'linestyle'} eq 'xerrorbars')  ||
     ($curve->{'linestyle'} eq 'yerrorbars')  ||      ($curve->{'linestyle'} eq 'yerrorbars')  ||
     ($curve->{'linestyle'} eq 'xyerrorbars')) {      ($curve->{'linestyle'} eq 'xyerrorbars')) {
     $plot_command.=' pointtype '.$curve->{'pointtype'};      
     $plot_command.=' pointsize '.$curve->{'pointsize'};      $pointtype =' pointtype '.$curve->{'pointtype'};
       $pointsize =' pointsize '.$curve->{'pointsize'};
  } elsif ($curve->{'linestyle'} eq 'filledcurves') {    } elsif ($curve->{'linestyle'} eq 'filledcurves') { 
     $plot_command.= ' '.$curve->{'limit'};      $plot_command.= ' '.$curve->{'limit'};
  } elsif ($curve->{'linetype'} ne '' &&   } elsif ($curve->{'linestyle'} eq 'vector') {
  $curve->{'linestyle'} eq 'lines') {  
     $plot_command.= ' linetype ';      # Create the arrow head style add it to 
     $plot_command.= $linetypes{$curve->{'linetype'}};      # $gnuplot_input..and ensure it gets
     $plot_command.= ' linecolor rgb "';      # Selected in the plot command.
     # convert color from xaaaaaa to #aaaaaa  
     $curve->{'color'} =~ s/^x/#/;      $gnuplot_input .= "set style arrow $arrow_style_index ";
     $plot_command.= $curve->{'color'}.'"';      $gnuplot_input .= ' ' . $curve->{'arrowhead'};
       $gnuplot_input .= ' size ' . $curve->{'arrowlength'};
       $gnuplot_input .= ','.$curve->{'arrowangle'};
       $gnuplot_input .= ',' . $curve->{'arrowbackangle'}; 
       $gnuplot_input .=  ' ' . $curve->{'arrowstyle'} . " ls $linestyle_index\n";
   
   
       $plot_command  .= "  arrowstyle $arrow_style_index ";
       $arrow_style_index++;
  }   }
  $plot_command.= ' linewidth '.$curve->{'linewidth'};  
   
   
   
    # The condition below is because gnuplot lumps the linestyle in with the 
    # arrowstyle _sigh_.
   
    if ($curve->{'linestyle'} ne 'vector') {
       $plot_command.= " ls $linestyle_index";
    }
   
  $gnuplot_input .= 'plot ' . $plot_type . ' ' . $plot_command . "\n";   $gnuplot_input .= 'plot ' . $plot_type . ' ' . $plot_command . "\n";
    $linestyle_index++; # Each curve get a unique linestyle.
     }      }
     # Write the output to a file.      # Write the output to a file.
     open (my $fh,">$tmpdir$filename.data");  
     binmode($fh, ":utf8");      # &Apache::lonnet::logthis($gnuplot_input); # uncomment to log the gnuplot input.
       open (my $fh, "> $tmpdir$filename.data");
       binmode($fh, ':utf8');
     print $fh $gnuplot_input;      print $fh $gnuplot_input;
     close($fh);      close($fh);
     # That's all folks.      # That's all folks.
Removed from v.1.156  
changed lines
  Added in v.1.169

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