postgis using COLLECT() in layer data...
Schuyler Erle
schuyler at NOCAT.NET
Thu Jun 16 14:09:52 PDT 2005
There used to be a bug in MapServer 4.4 (there might still be?) where
the msPOSTGIS code wasn't doing case-insensitive pattern matching on
the SQL query. Change your query to read 'the_geom FROM (...)' (and
maybe change the case in the subquery also) and it *should* work.
I patched this bug in my local MapServer install but never got round
to submitting the patch. If the problem still exists, please let me
know and I will update my patch against the latest CVS and actually
submit it this time.
SDE
* On 15-Jun-2005 at 8:44AM PDT, John Cole said:
> Hello,
> I'm trying to un-clutter street labels by using a COLLECT() and grouping
> on the street name, but I'm running into a problem getting MapServer 4.4 to
> work with the data line.
>
> Here is my layer
>
> LAYER
> NAME Highways_anno
> STATUS default
> GROUP roads
> CONNECTIONTYPE postgis
> CONNECTION "user=mapserver password=mapserver
> dbname=florence host=localhost"
> DATA "the_geom from (select collect(the_geom) as the_geom,
> rd_name from tgr_roads group by rd_name) AS new_table USING UNIQUE rd_name
> USING SRID=-1"
> TYPE annotation
> LABELITEM "rd_name"
> MAXSCALE 12000
>
> CLASS
> LABEL
> COLOR 0 0 0
> TYPE TRUETYPE
> ANGLE AUTO
> FONT arial
> SIZE 8
> ANTIALIAS TRUE
> POSITION CC
> MINDISTANCE 10
> BUFFER 5
> END
> END
> END
>
> The query returns, but no labels are drawn. Using a DATA "the_geom from
> tgr_roads" does draw labels.
>
> What am I doing wrong? :-)
>
> Thanks,
>
> John Cole
>
> -------------------------------------
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