[mapserver-users] CGI controls - Symbol

[Ben Brehmer]

Thanks Steve,

Just tried creating a symbol image in my mapfile and referencing that 
through the URL with no luck.

I've created a ticket for this: http://trac.osgeo.org/mapserver/ticket/2700

Cheers,

Ben

Steve Lime wrote:
> I wonder if this is related to using an image. If you define another named symbol in your
> mapfile, e.g.:
>
> SYMBOL
>   TYPE PIXMAP
>   NAME 'blue_star'
>   IMAGE ./blue_star.gif
> END
>
> and then try to reference it:
>
>   ...&map.layer[0].CLASS[0].STYLE[0]=SYMBOL+'blue_star'&...
>
> Does that work? Might be a reasonable workaround.
>
> MapServer resolves symbol names at the end of mapfile parsing and that's probably not 
> happening in this case. The reason we wait until the end is because symbols and symbolsets 
> can be anywhere in the file. This is probably a bug if you'd please file a ticket...
>
> Steve
>
>
>   
>>>> On 7/11/2008 at 6:03 PM, in message <4877E6A5.5040903 at refractions.net>, Ben
>>>>         
> Brehmer <bbrehmer at refractions.net> wrote:
>   
>> Dear All,
>>
>> Just wondering if there are any known problems when trying to modify a 
>> symbol via the URL in Mapserver 5.0.3.
>>
>> I am trying to do on-the-fly symbol changes with the CGI variables as 
>> follows:
>>
>> ...&map.layer[0].CLASS[0].STYLE[0]=SYMBOL+'./blue_star.gif'&...
>>
>>
>> The above produces no errors and a blank image. Seems to me as though 
>> the symbol is simply ignored in the URL because when I assign a color 
>> (map.layer[0].class[0].style[0]=COLOR+151+151+151) I get a whole whack 
>> of points back. Predefining the SYMBOL in the mapfile (SYMBOL 
>> "./blue_star.gif") also works perfectly fine.
>>
>>
>> Not sure if I'm doing something wrong, but I've tried pretty much every 
>> combination including using using non-image symbols, playing around with 
>> the mapfile, and pulling out my hair. Note that I am also using the DATA 
>> CGI var to supply dynamic data content in the same URL (not sure if this 
>> would make a difference).
>>
>> Any ideas/suggestions would be greatly appreciated.
>>
>> Thanks,
>>
>> Ben Brehmer
>>
>>
>>
>>
>> The mapfile is pretty straight forward:
>> .
>> ..
>> ...
>> DATAPATTERN ".*"
>>
>> LAYER
>>     NAME "pointlayer"
>>     DATA ""
>>     CONNECTIONTYPE postgis
>>     CONNECTION "host=localhost user=postgres port=5432 dbname=name 
>> password=pass"
>>     CLASSITEM "point_id"
>>     CLASS
>>       NAME ""
>>       STYLE
>>       END
>>     END
>> ...
>> ..
>> .
>>
>> Mapserver is compiled with the following options:
>> MapServer version 5.0.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP 
>> OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE 
>> SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_CLIENT 
>> SUPPORTS=FASTCGI INPUT=EPPL7 INPUT=POSTGIS INPUT=OGR INPUT=GDAL 
>> INPUT=SHAPEFILE
>>
>> _______________________________________________
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>> mapserver-users at lists.osgeo.org 
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>     
>
>