|
 yZoneColor confusion |
| Posted by knewby on May-20-2011 04:18 |
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Hi Peter -
I am trying to change the color of a line ($TripleSpotMin) to red when it's value is below the Spec (Min) line ($CoatWeightMin). I'm using yZoneColor to do this, but it's not working. I don't know what I'm doing wrong. Any help is greatly appreciated!
$lineLayer2 = $c->addLineLayer();
# For Triple Spot Min Line: Red line (0xff0000) if < Spec Min and Blue line (0x0066cc) if > Spec Min
$lineLayer2->addDataSet($TripleSpotMin, $lineLayer2->yZoneColor($CoatWeightMin, 0xff0000, 0x0066cc), "Triple Spot Min");
$lineLayer2->setLineWidth(2);
So in this example, all of the line portions below 40 should be colored red... |
| Re: yZoneColor confusion |
| Posted by knewby on May-20-2011 04:23 |
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| Sorry - forgot the chart pic for this question.
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| Re: yZoneColor confusion |
| Posted by Peter Kwan on May-21-2011 00:24 |
|
Hi knewby,
According to your code, the line color should depend in $CoatWeightMin. As I do not know what is $CoatWeightMin, it is hard to know if the chart you got is correct or incorrect.
To trouble-shoot the problem, may be you can modify your code to:
$lineLayer2->addDataSet($TripleSpotMin, $lineLayer2->yZoneColor(40, 0xff0000, 0x0066cc), "Triple Spot Min");
If the above code works (which has the y-zone hard coded to 40), that means your charting code is correct. If the y-zone color in your real code is not at the expected position, it is likely $CoatWeightMin is incorrect.
Hope this can help.
Regards
Peter Kwan |
| Re: yZoneColor confusion |
| Posted by knewby on May-21-2011 04:48 |
|
Yes that helps Peter - It works with a constant of 40. Thank you.
But $CoatWeightMin is an array of varying values - it is the red line on the chart.
$lineLayer = $c->addLineLayer();
$lineLayer->addDataSet($CoatWeightMin, 0xff0000, "Spec (Min)");
I was hoping that I could change the color of the $TripleSpotMin line when any of the $TripleSpotMin points fall below the corresponding points on the $CoatWeightMin line. I don't know how to do this.
Thank you so much for your help! |
| Re: yZoneColor confusion |
| Posted by Peter Kwan on May-22-2011 13:09 |
|
Hi knewby,
Unluckily, ChartDirector cannot change the color of a line based on whether it is above or below another line. It can only fill the region between 2 lines using different colors depending on which line is above the other line. (See the sample code "Line Comparison".)
Regards
Peter Kwan |
| Re: yZoneColor confusion |
| Posted by knewby on May-23-2011 23:37 |
|
Peter -
Yay!!!! The Line Comparison sample code was perfect! Thank you again for your patience and advice!!!!
knewby |
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