Hi,
Attributes of type double can not really be nulls in shapefile. See
https://desktop.arcgis.com/en/arcmap/latest/manage-data/shapefiles/geoprocessing-considerations-for-shapefile-output.htm#GUID-A10ADA3B-0988-4AB1-9EBA-AD704F77B4A2.
A value -1.7976931348623158e+308 might work as a null but I do not consider it
generally reliable. Use some other format as a datasource.
-Jukka Rahkonen-
Lähettäjä: mapserver-users Puolesta
Marcin Grudzien
Lähetetty: maanantai 2. elokuuta 2021 15.07
Vastaanottaja: mapserver-users@lists.osgeo.org
Aihe: [mapserver-users] WFS changing NULL values to 0.
Hi,
I am publishing an SHP file via the WFS service using Mapserver 7.2.2
In some cases, attributes of a type double have NULL values in the SHP. In such
cases, MapServer is publishing them as "0" in GetFeature responses which may be
confusing to the data users. I would like to achieve a situation that if the
attribute value is NULLin SHP, the attribute is not published in GetFeature
response.
For example the response instead of this
419591.224000 697399.714000
284301500
419591.224
697399.714
0
0
Should look like this
419591.224000 697399.714000
284301500
419591.224
697399.714
Can it be achieved in MapServer?
Best regards,
Marcin
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