By the way, I have seen odd problems with column types happen after
exporting or importing from other formats. So be careful, and always
use ogr2ogr for converting :)
-jeff
--
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/
On 2016-04-04 12:33 AM, Inna Nogeste wrote:
Hi Thomas,
After many attempts using the same expression syntax it finally worked.
Is there any reason as to why the following expression syntax didn’t
work the first time?
.layer.part
CLASSITEM "class"
.style.part
CLASS
EXPRESSION "0"
I also needed to map the following attributes which all displayed the
first time with no problems
EXPRESSION "-1"
EXPRESSION "1"
EXPRESSION "2"
Regards,
*Inna Nogeste *| Spatial Information Specialist
*Geospatial Data and Services*
*Information Systems and Services Division*
Bureau of Meteorology
*From:*thomas bonfort [mailto:[email protected]]
*Sent:* Friday, 1 April 2016 8:26 PM
*To:* Inna Nogeste
*Cc:* [email protected]
*Subject:* Re: [mapserver-users] Shapefile features = 0 (zero integer
value) are empty and ignored? [SEC=UNCLASSIFIED]
What expression syntax are you using in your mapfile to select/filter
these features?
--
Thomas
On 1 April 2016 at 02:40, Inna Nogeste <[email protected]
<mailto:[email protected]>> wrote:
I'm using MapServer 6.4 and have a shapefile where features have an
attribute = 0 (zero integer value). I want to display these features = 0
but they seem to be regarded as null/empty features in MapServer so are
ignored and won’t display on the map.
Other integer values in the same field can be displayed on the map,
including the value of -1, but not 0.
I can select these records = 0 in ArcGIS and QGIS 2.8.2
Can anyone tell me how, or if, shapefile features with attribute = 0
integer value can be used in a MapServer expression, or how to enter
values = 0 in to a shapefile for MapServer Expressions?
Regards,
Inna Nogeste | Spatial Information Specialist
Geospatial Data and Services
Information Systems and Services Division
Bureau of Meteorology
www.bom.gov.au <http://www.bom.gov.au>
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