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| Bug #16216 | forceMaximum on stacked bar graph "wraps" values | ||
|---|---|---|---|
| Submitted: | 2009-05-11 15:40 UTC | ||
| From: | mortoray | Assigned: | |
| Status: | Open | Package: | Image_Graph (version 0.7.2) |
| PHP Version: | 5.2.9 | OS: | |
| Roadmaps: | (Not assigned) | ||
[2009-05-11 15:40 UTC] mortoray
(edA-qa mort-ora-y)
Description:
------------
On a stacked bar graph if you use forceMaximum and set a value "lower" than the total of one of the stacked graphs that last item seems to fill back to zero instead of that maximum.
Test script:
---------------
<?php
error_reporting( E_ERROR );
require_once 'Image/Graph.php';
$graph = Image_Graph::factory('graph', array(400, 300));
$graph->add( $plotarea = Image_Graph::factory('plotarea',array('category','axis','horizontal')) );
$data = array( 1, 2, 1, 3 );
for( $i=0; $i < count( $data); $i++ ) {
$dataset[$i] = Image_Graph::factory('dataset');
$dataset[$i]->addPoint( 'One', $data[$i] );
$dataset[$i]->addPoint( 'Two', $data[$i]*2 );
}
$plot = $plotarea->addNew('bar', array($dataset,'stacked'));
$plotarea->addNew('line_grid', array(), IMAGE_GRAPH_AXIS_Y);
$fillArray = @Image_Graph::factory('Image_Graph_Fill_Array');
$fillArray->addColor( "blue@0.5" );
$fillArray->addColor( "green@0.5" );
$fillArray->addColor( "red@0.5" );
$fillArray->addColor( "black@0.5" );
$plot->setFillStyle($fillArray);
$xAxis = $plotarea->getAxis( IMAGE_GRAPH_AXIS_Y );
$xAxis->forceMaximum( 9 );
$graph->done();
?>
Expected result:
----------------
I would expect the black bar on the top graph to extend to the right side.
Actual result:
--------------
Instead it goes to the left side -- the opacity has been set low so you can easily see the overlap of the colors.