[mapserver-users] RE null value renders in pie chart

[Steve.Toutant at inspq.qc.ca]

I also tried with 
EXPRESSION ([cri] != "")

I still have 4 slices...




Steve.Toutant at inspq.qc.ca@lists.osgeo.org 
Envoyé par : mapserver-users-bounces at lists.osgeo.org
2013-01-03 11:43

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[mapserver-users] null value renders in pie chart









Hi, 
I created a layer that renders pie chart with 4 classes. 

The problem is some classes are render in the pie even if there is no data 
(null). That means I always have 4 slices in the pie. 
How can I remove the slices with null value? 

I tried using EXPRESSION without success. I specified > 0 since I think 
"is not null" is not supported 
CLASS 
        NAME "Cri" 
        EXPRESSION ([cri] > 0) 
        STYLE 
                SIZE [cri] 
                COLOR 215 48 39 
        END 
END

thanks for your help, 
Steve _______________________________________________
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