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

[Puneet Kishor]

On Feb 17, 2012, at 2:34 PM, Smith, Michael ERDC-CRREL-NH wrote:

> Punnet
> 
> You could use runtime substitution for this.
> 
> DATA "path/to/%month%/my.img"
> 
> 


Beautiful. Many thanks. 


Now the next part about figuring out the SCALE automatically?

> 
> 
> 
> 
> 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
>