[mapserver-users] dynamically changing data path and calculating scales

[Smith, Michael ERDC-CRREL-NH]

Punnet

You could use runtime substitution for this.

DATA "path/to/%month%/my.img"


And then send &month=11 in the URL.

You will also need a VALIDATION block for the substitution string.

VALIDATION
  "month"   "/^(0?[1-9]|1[0-2])$/"
END

The VALIDATION block would be at the LAYER level.

Mike

-- 
Michael Smith

Remote Sensing/GIS Center
US Army Corps of Engineers




On 2/17/12  3:25 PM, "Puneet Kishor" <punk.kish at gmail.com> wrote:

>I have a layer like so that works very well (snipped for brevity)
>
>	LAYER
>		TYPE RASTER
>		DATA "path/to/data/my.img"
>		PROCESSING "SCALE=-24.403,-1.483"
>        CLASS
>        	STYLE
>        		COLORRANGE 46 154 88 251 255 128
>      			DATARANGE -24 0
>    		END
>  		END
>	END
>	
>Now, I want to dynamically change the "path/to/data" via a web query.
>Basically, I have img files for different months, and I want the user to
>be able to choose a specific month and have MapServer deliver that data.
>So, for January, I want "path/to/1/my.img" and for November it would be
>"path/to/11/my.img".
>
>Additionally, that "SCALE=-24.403,-1.483" above... well, I used one of
>them gdal utils to determine that, but I would like to do that
>automagically. Needless to say, "SCALE=AUTO" does not work.
>
>Suggestions?
>
>
>
>--
>Puneet Kishor_______________________________________________
>mapserver-users mailing list
>mapserver-users at lists.osgeo.org
>http://lists.osgeo.org/mailman/listinfo/mapserver-users