--- loncom/xml/lonplot.pm	2007/02/21 20:34:58	1.115
+++ loncom/xml/lonplot.pm	2007/09/05 13:38:18	1.118.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Dynamic plot
 #
-# $Id: lonplot.pm,v 1.115 2007/02/21 20:34:58 albertel Exp $
+# $Id: lonplot.pm,v 1.118.2.1 2007/09/05 13:38:18 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -217,11 +217,11 @@ my %gnuplot_defaults =
 	 choices     => ['100','200','500','1000','2000','5000']
 	 },
      align        => {
-	 default     => 'center',
-	 test        => sub {$_[0]=~/^(left|right|center)$/},
+	 default     => 'middle',
+	 test        => sub {$_[0]=~/^(left|right|middle|center)$/},
 	 description => 'alignment for image in html',
 	 edit_type   => 'choice',
-	 choices     => ['left','right','center']
+	 choices     => ['left','right','middle']
 	 },
      texwidth     => {
          default     => '93',
@@ -274,10 +274,10 @@ my %gnuplot_defaults =
          },
      gridtype     => {
 	 default     => 'Cartesian',
-	 test        => sub {$_[0]=~/^(Polar|Cartesian)$/},
+	 test        => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
 	 description => 'Grid type:',
 	 edit_type   => 'choice',
-         choices     => ['Cartesian','Polar']
+         choices     => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
          },
      lmargin      => {
 	 default     => 'default',
@@ -467,7 +467,7 @@ my %axis_defaults =
 	 }
      );
 
-my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize','limit');
+my @curve_edit_order = ('color','name','linestyle','linewidth','pointtype','pointsize','limit');
 
 my %curve_defaults = 
     (
@@ -492,14 +492,13 @@ my %curve_defaults =
 	 edit_type   => 'choice',
 	 choices     => [keys(%linestyles)]
 	 },
-# gnuplots term=gif driver does not handle linewidth :(
-#     linewidth => {
-#         default     => 1,
-#         test        => $int_test,
-#         description => 'Line width (may not apply to all line styles)',
-#         edit_type   => 'choice',
-#         choices     => [1,2,3,4,5,6,7,8,9,10]
-#         },
+     linewidth => {
+         default     => 4,
+         test        => $int_test,
+         description => 'Line width (may not apply to all line styles)',
+         edit_type   => 'choice',
+         choices     => [1,2,3,4,5,6,7,8,9,10]
+         },
      pointsize => {
          default     => 1,
          test        => $pos_real_test,
@@ -550,7 +549,9 @@ sub start_gnuplot {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
 	$result .= &edit_attributes($target,$token,\%gnuplot_defaults,
-				    \@gnuplot_edit_order);
+				    \@gnuplot_edit_order)
+	    .&Apache::edit::end_row()
+	    .&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {
 	my $constructtag=&Apache::edit::get_new_args
 	    ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
@@ -717,9 +718,7 @@ sub start_title {
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token,'Plot Title');
 	my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
-	$result.=&Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	$result.=&Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/title",$parser);
@@ -750,9 +749,7 @@ sub start_xlabel {
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
 	my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
-	$result.=&Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	$result.=&Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);	
 	$result.=&Apache::edit::modifiedfield("/xlabel",$parser);
@@ -784,9 +781,7 @@ sub start_ylabel {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
 	my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/ylabel",$parser);
@@ -858,13 +853,15 @@ sub start_curve {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Curve');
 	$result .= &edit_attributes($target,$token,\%curve_defaults,
-                                    \@curve_edit_order);
+                                    \@curve_edit_order)
+	    .&Apache::edit::end_row()
+	    .&Apache::edit::start_spanning_row();
+
     } elsif ($target eq 'modified') {
 	my $constructtag=&Apache::edit::get_new_args
 	    ($token,$parstack,$safeeval,keys(%curve_defaults));
 	if ($constructtag) {
 	    $result = &Apache::edit::rebuild_tag($token);
-	    $result.= &Apache::edit::handle_insert();
 	}
     }
     return $result;
@@ -902,9 +899,7 @@ sub start_function {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
 	my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/function",$parser);
@@ -979,9 +974,7 @@ sub start_data {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
 	my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/data",$parser);
@@ -1129,6 +1122,13 @@ sub write_gnuplot_file {
     # cartesian or polar grid?
     if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
         $gnuplot_input .= 'set grid polar'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
+        $gnuplot_input .= 'set logscale x'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
+        $gnuplot_input .= 'set logscale y'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
+        $gnuplot_input .= 'set logscale x'.$/;
+        $gnuplot_input .= 'set logscale y'.$/;
     } else {
         # Assume Cartesian
     }
@@ -1238,12 +1238,16 @@ sub write_gnuplot_file {
     for (my $i = 0;$i<=$#curves;$i++) {
 	$curve = $curves[$i];
 	$gnuplot_input.= ', ' if ($i > 0);
+	if ($target eq 'tex') {
+	    $curve->{'linewidth'} *= 2;
+	}
 	if (exists($curve->{'function'})) {
 	    $gnuplot_input.= 
 		$curve->{'function'}.' title "'.
 		$curve->{'name'}.'" with '.
                 $curve->{'linestyle'};
-            $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
+            $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
+
             if (($curve->{'linestyle'} eq 'points')      ||
                 ($curve->{'linestyle'} eq 'linespoints') ||
                 ($curve->{'linestyle'} eq 'errorbars')   ||
@@ -1278,7 +1282,7 @@ sub write_gnuplot_file {
 	    $gnuplot_input.= '"'.$datafilename.'" title "'.
 		$curve->{'name'}.'" with '.
 		$curve->{'linestyle'};
-            $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
+            $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
             if (($curve->{'linestyle'} eq 'points')      ||
                 ($curve->{'linestyle'} eq 'linespoints') ||
                 ($curve->{'linestyle'} eq 'errorbars')   ||