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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