Hi,
>From document page: http://mapserver.org/mapfile/expressions.html
"To use a string comparison for filtering a LAYER, both FILTERITEM and FILTER
must be set. FILTERITEM is set to the attribute name. FILTER is set to the
value for comparison. The same rule applies to CLASSITEM in the LAYER ob
Hello Jukka
The post from stackexchange was mine. It was at the time when I
migrated everything from 5.0 to 6.2 and the docs for 6.2 were not too
clear.
I too use FILTEITEM when I want to single out something (like the
roads from Tiger edges); I am using Mapserver for 4 years now and I
still do n
Hello,
as far as I know - yes. But you can use expressions with more than one
attribute.
MfG M. Martin
mailto:t...@tds-net.de
1+1=10
You have a ques
You do not need to set both FILTERITEM and FILTER. You can just set
FILTER to an expression using as many attributes as you need. e.g.
FILTER (( [POPULATION] < 50 ) AND ("[DISPLAY]" == "1")). Just like
you can have multiple attributes in a class EXPRESSION.
I think it's the section of the
Hi,
Thank you very much, Christy. By your example I made some tests and now filters
like this work for me
FILTER (([WORKERS]>2000) OR ("[STATE_FIPS]"="17"))
The secret element was the right syntax for string attributes
("[STATE_FIPS]"="17").
Now when I know how it must be used I can find c
versions. I guess my recommendation would be avoid FILTERs
unless you have a good reason to use them.
Steve
From: mapserver-users-boun...@lists.osgeo.org
[mapserver-users-boun...@lists.osgeo.org] on behalf of Rahkonen Jukka (Tike)
[jukka.rahko...@mmmtike.fi]
Sent: Wednesday, May 14, 2014 8:05
users-boun...@lists.osgeo.org
2014-05-14 09:05
A
"mapserver-users@lists.osgeo.org"
cc
Objet
Re: [mapserver-users] About FILTER and FILTERITEM
Hi,
Thank you very much, Christy. By your example I made some tests and now
filters like this work for me
FILTER (([WORKERS]>2000)
Hi,
As far as I know the Filter is used while data retrieving. At least I have with
Postgis and a OSM map FILTER like that:
FILTER "type IN ('rail', 'monorail', 'lightrail‘)"
This is passed 1:1 to the Postgis data source (I checked that) and thus has a
huge performance impact as the complete res
"Rahkonen Jukka (Tike)" ,
"mapserver-users@lists.osgeo.org"
cc
Objet
Re: [mapserver-users] About FILTER and FILTERITEM
FIlters are used primarily under the hood for certain types of query
operations. The main differences are:
- FILTERs are defined in the native query
second option is a bit more performant,
> especially in older versions. I guess my recommendation would be avoid FILTERs
> unless you have a good reason to use them.
>
> Steve
>
> ____________
> From: mapserver-users-boun...@lists.osgeo.org [mapserver-users-
ss and the second option is a bit more
> > performant, especially in older versions. I guess my recommendation
> > would be avoid FILTERs unless you have a good reason to use them.
> >
> > Steve
> >
> >
> > From: mapser
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