--- loncom/xml/lonplot.pm	2012/02/22 10:16:39	1.155
+++ loncom/xml/lonplot.pm	2012/07/03 11:29:57	1.156
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Dynamic plot
 #
-# $Id: lonplot.pm,v 1.155 2012/02/22 10:16:39 foxr Exp $
+# $Id: lonplot.pm,v 1.156 2012/07/03 11:29:57 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1635,7 +1635,7 @@ sub write_gnuplot_file {
 	# set output
 	$gnuplot_input .= "set output\n";
     } elsif ($target eq 'tex') {
-	$gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
+	$gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} dash ";
 	if (!$font_properties->{'tex_no_file'}) {
 	    $gnuplot_input .=
 		'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
@@ -1835,40 +1835,31 @@ sub write_gnuplot_file {
         $gnuplot_input .="\n";
     }
     # curves
-    $gnuplot_input .= 'plot ';
+    #
+    # Each curve will have its very own linestyle.
+    # (This should work just fine in web rendition I think).
+    #  The line_xxx variables will hold the elements of the line style.
+    #  type (solid/dashed), color, width
+    #
+    my $linestyle_index = 50;
+    my $line_type    = '';     
+    my $line_color   = '';
+    my $line_width   = '';
+
+    my $plot_command;
+    my $plot_type;
+
     for (my $i = 0;$i<=$#curves;$i++) {
 	$curve = $curves[$i];
-	$gnuplot_input.= ', ' if ($i > 0);
+	$plot_command.= ', ' if ($i > 0);
 	if ($target eq 'tex') {
 	    $curve->{'linewidth'} *= 2;
 	}
 	if (exists($curve->{'function'})) {
-	    $gnuplot_input.= 
+	    $plot_type    = 
 		$curve->{'function'}.' title "'.
 		$curve->{'name'}.'" with '.
                 $curve->{'linestyle'};
-
-            if (($curve->{'linestyle'} eq 'points')      ||
-                ($curve->{'linestyle'} eq 'linespoints') ||
-                ($curve->{'linestyle'} eq 'errorbars')   ||
-                ($curve->{'linestyle'} eq 'xerrorbars')  ||
-                ($curve->{'linestyle'} eq 'yerrorbars')  ||
-                ($curve->{'linestyle'} eq 'xyerrorbars')) {
-                $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
-                $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
-            } elsif ($curve->{'linestyle'} eq 'filledcurves') { 
-                $gnuplot_input.= ' '.$curve->{'limit'};
-            } elsif ($curve->{'linetype'} ne '' &&
-                     $curve->{'linestyle'} eq 'lines') {
-                $gnuplot_input.= ' linetype ';
-                $gnuplot_input.= $linetypes{$curve->{'linetype'}};
-                $gnuplot_input.= ' linecolor rgb "';
-                # convert color from xaaaaaa to #aaaaaa
-                $curve->{'color'} =~ s/^x/#/;
-                $gnuplot_input.= $curve->{'color'}.'"';
-            }
-            $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
-
 	} elsif (exists($curve->{'data'})) {
 	    # Store data values in $datatext
 	    my $datatext = '';
@@ -1889,30 +1880,31 @@ sub write_gnuplot_file {
 	    print $fh $datatext;
 	    close($fh);
 	    #   generate gnuplot text
-	    $gnuplot_input.= '"'.$datafilename.'" title "'.
+	    $plot_type = '"'.$datafilename.'" title "'.
 		$curve->{'name'}.'" with '.
 		$curve->{'linestyle'};
-            if (($curve->{'linestyle'} eq 'points')      ||
-                ($curve->{'linestyle'} eq 'linespoints') ||
-                ($curve->{'linestyle'} eq 'errorbars')   ||
-                ($curve->{'linestyle'} eq 'xerrorbars')  ||
-                ($curve->{'linestyle'} eq 'yerrorbars')  ||
-                ($curve->{'linestyle'} eq 'xyerrorbars')) {
-                $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
-                $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
-            } elsif ($curve->{'linestyle'} eq 'filledcurves') { 
-                $gnuplot_input.= ' '.$curve->{'limit'};
-            } elsif ($curve->{'linetype'} ne '' &&
-                     $curve->{'linestyle'} eq 'lines') {
-                $gnuplot_input.= ' linetype ';
-                $gnuplot_input.= $linetypes{$curve->{'linetype'}};
-                $gnuplot_input.= ' linecolor rgb "';
-                # convert color from xaaaaaa to #aaaaaa
-                $curve->{'color'} =~ s/^x/#/;
-                $gnuplot_input.= $curve->{'color'}.'"';
-            }
-                $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; 
 	}
+	if (($curve->{'linestyle'} eq 'points')      ||
+	    ($curve->{'linestyle'} eq 'linespoints') ||
+	    ($curve->{'linestyle'} eq 'errorbars')   ||
+	    ($curve->{'linestyle'} eq 'xerrorbars')  ||
+	    ($curve->{'linestyle'} eq 'yerrorbars')  ||
+	    ($curve->{'linestyle'} eq 'xyerrorbars')) {
+	    $plot_command.=' pointtype '.$curve->{'pointtype'};
+	    $plot_command.=' pointsize '.$curve->{'pointsize'};
+	} elsif ($curve->{'linestyle'} eq 'filledcurves') { 
+	    $plot_command.= ' '.$curve->{'limit'};
+	} elsif ($curve->{'linetype'} ne '' &&
+		 $curve->{'linestyle'} eq 'lines') {
+	    $plot_command.= ' linetype ';
+	    $plot_command.= $linetypes{$curve->{'linetype'}};
+	    $plot_command.= ' linecolor rgb "';
+	    # convert color from xaaaaaa to #aaaaaa
+	    $curve->{'color'} =~ s/^x/#/;
+	    $plot_command.= $curve->{'color'}.'"';
+	}
+	$plot_command.= ' linewidth '.$curve->{'linewidth'};
+	$gnuplot_input .= 'plot ' . $plot_type . ' ' . $plot_command . "\n";
     }
     # Write the output to a file.
     open (my $fh,">$tmpdir$filename.data");