[mapserver-users] how use the expression function "area"

[Lime, Steve D (DNR)]

Hi Andrea: In expressions the tag [shape] should be used to reference the current geometry. Many of the drivers don't define a geometry name column (e.g. native shapefiles) so we needed a consistent way to refer to it... So try:

  EXPRESSION ( (area([shape]) > 10000000) )

Steve 

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Andrea Peri
Sent: Tuesday, January 08, 2013 3:56 AM
To: mapserver-users at lists.osgeo.org
Subject: [mapserver-users] how use the expression function "area"

Hi,

I see in the mapserver 6.2 is added the function "area" to the expressions.

So I try to use  this expression:

EXPRESSION ( (area([GEOMETRY]) > 10000000) )

where geometry is the geometry field.
The datasource is a spatialite db where the geometry filed is named "GEOMETRY"

It return this errror:

msOGRLayerInitItemInfo(): OGR error: Invalid field name GEOMETRY.

Perhaps I miss to understanding the mean of area() function ?

Any info is welcome.
Thx,

-- 
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Andrea Peri
. . . . . . . . .
qwerty àèìòù
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