NAME

gbrowse_key_img

SYNOPSIS

A small cgi script designed for generating key images for features using heat_map glyph Shows the color space used to display feature scores. Hardcoded to be 120x23 image and may be embedded in hover balloons using stanza code, i.e.

            

              
              
balloon hover = sub { my $f = shift;
                      my $score = $f->score;
                      my $img_url = "...gbrowse_key_img?min=0;max=0.001;start_c=blue;end_c=green";
                      return $score ? join (" ","<img width=120 height=23 src=\"".$img_url."\"/>",$f->name,"(Score:".$score.")") : $f->name;
            
          

The above code will display color key with score information

Options

            

              
              
Option      Description                   Default
------      -----------                   -------
-start_c     Beginning of the color       white
             gradient, expressed as a 
             named color or RGB hex 
             string
-end_c       End of the color gradient    red
-min         Minimum score of the data    0
  
-max         Maximum score of the data    255
-width       Width of the image           120
-height      Height of the image          20