Hi list, according to the documentation, the first layer in the mapfile is
drawn first, and the second is drawn on top of that and so on... I was
wondering if the same principle applies to the CLASS object as well. For
example: I have a "Roads" layer stored in PostGIS with a "Category" column
Within a layer objects are always drawn in the order they are delivered
from the datasource. Think of the CLASSes are an IF-ELSEIF-BLOCK, when
an object is presented each CLASS is tested and the first one the
accepts the object renders it.
I often up a default class at then end that has no exp
Oh, and I forgot to mention that if you want objects rendered in a
particular order, then your should sort the data in the sources in that
order. You can do this with order by clause on SQL based data sources
and using shpsort for shapefiles, ogr2ogr and also sort data.
On 1/21/2017 10:03 PM,
2 05:35
> Ämne: Re: [mapserver-users] Mapfile CLASS hierarchy
>
> Oh, and I forgot to mention that if you want objects rendered in a
> particular order, then your should sort the data in the sources in that
> order. You can do this with order by clause on SQL based data sources