loncom/cgi/graph.png - diff

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-version 1.21, 2003/03/26 21:52:37
+version 1.22, 2003/10/08 15:44:49
  Line 25
  # http://www.lon-capa.org/
  #
  # The LearningOnline Network with CAPA
- # Behrouz Minaei
+ #
- # YEAR=2001
- # 9/13/01, 9/25/01, 10/6/01, 10/9/01, 12/25/01
- # YEAR=2002
- # 2/1/, 5/13, 5/15
- # YEAR=2003
- # 1/7/, 1/13
  # A CGI script that dynamically outputs a graphical chart for lonstatistics.
  #
  ####
+ =pod
+ =head1 NAME
+ graph.png
+ =head1 SYNOPSIS
+ produces plots based on input
+ =head1 DESCRIPTION
+ graph.png is a cgi-bin script which produces plots based on input data.
+ The query string is expected to be as follows (without whitespace):
+ escape(Plot title) & escape(X label)& escape(Y label) & Maximum Y value &
+ Number of bars & $data1 & $data2
+ $data1 and $data2 are expected to be comma seperated lists of numbers.
+ escape( value ) means the values must be run through lonnet::escape.
+ =cut
  use strict;
  use GD::Graph::bars;
  use GD::Graph::colour;