[mapserver-users] Select the dataset at runtime

[Andrea Peri]

Hi,
thx for response.
I see the example. Its pretty interesting.
Also another option I found in the documentation:
http://mapserver.org/cgi/runsub.html

I see in the MS6.2 should be possible to act on
DATA and DATAPATTERN.

I guess this could be a good choice, but no  other information on this and
how to use.
Is this runtime substitution for DATA and DATAPATTERN really available ?

Thx,



2013/6/18 Kralidis,Tom [Ontario] <Tom.Kralidis at ec.gc.ca>

> Andrea: you can do something like use runtime substitution (neat example
> at
> http://linfiniti.com/2011/09/making-the-most-of-umn-mapserver-runtime-variable-substitution/),
> or MapScript WxS wrappers (
> http://mapserver.org/ogc/mapscript.html#python-examples).
>
>
>
> From: mapserver-users-bounces at lists.osgeo.org [mailto:
> mapserver-users-bounces at lists.osgeo.org] On Behalf Of Andrea Peri
> Sent: June 18, 2013 2:27 PM
> To: mapserver-users at lists.osgeo.org
> Subject: [mapserver-users] Select the dataset at runtime
>
> Hi,
> Is possible to change at runtime the datasource of a layer using a
> parameter of the request to choose the dataset ?
> I'm explain better.
> I have two datasource of the same physical phenomenon.
> The first is at 96dpi and the second at 300dpi.
>
> I like to show the first when the user see it on a webgis and ask it using
> a request getmap with the extra parameter map_resolution=96
> Instead the mapserver should return the second dataset when the request
> has an extra_parameter map_resolution=300 tipically when the user call it
> for a print at high resolution.
> I'm trying to avoid to set two distinct mapserver layers.
> To avoid the user should change the layer in the request.
>
> The solution I'm searching is to allow the use of the parameter
> "map_resolution" to choose the dataset to use.
>
>
> --
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------
>



-- 
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
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