CGI::Application::PlugUserCGI::Application::Plugin::DBIProfile::Graph::HTML(3)NAMECGI::Application::Plugin::DBIProfile::Graph::HTML - VERY basic pure
html vertical bar graphing for CAP:DBIProfile.
SYNOPSIS
# in httpd.conf
SetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTML
PerlSetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTMLDESCRIPTION
This module is provided as a basic implementation of graphing for
CAP:DBIProfile. It can be used as an example to develop other, more
sophisticated, graphing solutions.
GRAPH PLUGIN DEVELOPMENT
The graphing plugin must have a method called "build_graph", which must
accept options as a hash.
It should return a scalar or scalar ref holding the HTML output needed
to generate your graph.
The following options will be passed to the "build_graph" method:
self
The cgiapp object.
mode_param
$self->mode_param - the runmode variable used to determine runmode
(usefull for creating links back to ourselves).
title
A textual title for your graph. You don't have to use this, but is
there if you want it.
ylabel
Label for values we're graphing. Either "Count" or "Seconds".
data
An array of the datapoints to graph.
tags
Labels for each datapoint which match the labels that will be used
on the sql statement list (1 to however many items there are).
The easiest graphs to implement are fully inline - ie. it doesn't need
to make any external calls (no <image> or <embed> tags and such).
CGI::Application::Plugin::DBIProfile::Graph::HTML is an example of
this. Other possible candidates are Plotr and Open Flash Chart (using
js interface to populate data).
Another inline solution is to use the <img src="data:uri"> scheme. An
example of this can be found in
CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline. Please
note, this isn't supported under MSIE.
In order to generate a graph that isn't inline, you'll need to pass the
data to be graphed with your call to the external object. For example,
if you want to use GDGraph, you could create a separate cgi script that
returns graphs based on params passed to it, and return an approapriate
image tag to from your graphing module. For example:
<img src="/cgi-bin/graph.pl?data=20,14,42&tags=1,2,3">
Another way, would be to add a runmode in a CGI::Application "init"
hook, and pass that runmode in a link back to the same script, and
include your graph module in our script with a use statement. An
example of this can be found in
CGI::Application::Plugin::DBIProfile::Graph::SVGTT.
REQUIREMENTS
L<HTML::Template>
SEE ALSO
L<CGI::Application::Plugin::DBIProfile>
L<CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline>
L<CGI::Application::Plugin::DBIProfile::Graph::SVGTT>
AUTHOR
Joshua I Miller, L<unrtst@cpan.org>
COPYRIGHT & LICENSE
Copyright 2007 Joshua Miller, all rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.14.1CGI::Application::Plugin::DBIProfile::Graph::HTML(3)
