Really need Tamas to comment on the clustering specifics but to clarify, MapServer stores all attributes as strings. Then they are cast as necessary when referenced in an expression.
Steve -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jörg Thomsen Sent: Friday, September 13, 2013 6:25 AM To: [email protected] Subject: [mapserver-users] [Cluster:FeatureCount] is string? Hi, I wonder if the [Cluster:FeatureCount] value is a string? I have a mapfile with three classes like > EXPRESSION "1" > EXPRESSION (("[Cluster:FeatureCount]" > "1") and > ("[Cluster:FeatureCount]" < "51") EXPRESSION ("[Cluster:FeatureCount]" > > "50" ) As result I get mixed symbols, each feature that has a cluster:featurecount beginning with 2,3,4,or 5 is symbololized with the styel of the 2nd class (even 101 or 455) and each feature that has a cluster:featurecount beginning with 6,7,8,or 9 is symbololized with the styel of the 3. class (even 7 or 9). An Expression like > EXPRESSION ("[Cluster:FeatureCount]" > 50 ) (no quotes) does not work. For a better understanding, here is the resulting image: http://mapmedia.de/tmp/mapserv.png) Furthermore it is not posible to calculate with it, sth. like > SIZE [Cluster:FeatureCount] / 10 does not work. Thats why I think mapserver treats featurecount as string. Or am I doing it wrong? Jörg -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Aufwind durch Wissen! Qualifizierte Open Source Schulungen bei der http://www.foss-akademie.de/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _________________________________________________ MapMedia Kartographie und raumbezogene Informationssysteme Gillweg 3, 14193 Berlin fon: +49 30 89 06 82-70 fax: +49 30 89 09 53-21 mail: [email protected] net: www.mapmedia.de _________________________________________________ Geschäftsführer: G. v. Tschirnhaus, J. Thomsen, P. Stamm Registergericht, Berlin - Amtsgericht Charlottenburg, HRB 89625, Umsatzsteuer-Identnummer: DE 813794062 _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
