Author: Kore Nordmann
Date: 2006-06-13 19:30:30 +0200 (Tue, 13 Jun 2006)
New Revision: 3128
Log:
- Added test and implementation for exclusive zero values
Modified:
trunk/Graph/src/axis/numeric.php
trunk/Graph/tests/numeric_axis_test.php
Modified: trunk/Graph/src/axis/numeric.php
===================================================================
--- trunk/Graph/src/axis/numeric.php 2006-06-13 16:27:22 UTC (rev 3127)
+++ trunk/Graph/src/axis/numeric.php 2006-06-13 17:30:30 UTC (rev 3128)
@@ -213,8 +213,15 @@
// Prevent division by zero, when min == max
if ( $this->minValue == $this->maxValue )
{
- $this->minValue -= ( $this->minValue / 10 );
- $this->maxValue += ( $this->maxValue / 10 );
+ if ( $this->minValue == 0 )
+ {
+ $this->maxValue = 1;
+ }
+ else
+ {
+ $this->minValue -= ( $this->minValue * .1 );
+ $this->maxValue += ( $this->maxValue * .1 );
+ }
}
// Calculate "nice" values for scaling parameters
Modified: trunk/Graph/tests/numeric_axis_test.php
===================================================================
--- trunk/Graph/tests/numeric_axis_test.php 2006-06-13 16:27:22 UTC (rev
3127)
+++ trunk/Graph/tests/numeric_axis_test.php 2006-06-13 17:30:30 UTC (rev
3128)
@@ -906,6 +906,36 @@
'As value for: minorStep; '
);
}
+
+ public function testValueAllZero() {
+ $chart = ezcGraph::create( 'Line' );
+ $chart->sample = array( 2000 => 0, 0 );
+ $chart->render( 500, 200 );
+
+ $this->assertEquals(
+ 0.,
+ $chart->Y_axis->min,
+ 'As value for: min; '
+ );
+
+ $this->assertEquals(
+ 1.,
+ $chart->Y_axis->max,
+ 'As value for: max; '
+ );
+
+ $this->assertEquals(
+ .25,
+ $chart->Y_axis->majorStep,
+ 'As value for: majorStep; '
+ );
+
+ $this->assertEquals(
+ .05,
+ $chart->Y_axis->minorStep,
+ 'As value for: minorStep; '
+ );
+ }
}
?>
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