[mapserver-users] QUERY vs DRAW Question

Daniel Morissette morissette at dmsolutions.ca
Fri Mar 29 08:54:25 PST 2002


Steve,

I'm not aware of any flag to bypass the minscale/maxscale in queries
(but there may be one).  Have you considered drawing the map first, and
then looping through all the layers to reset the minscale/maxscale in
each of them to -1 before performing the query?

That would seem like the simplest solution to me.

Daniel



Stephen Woodbridge wrote:
> 
> Hi all,
> 
> Does anyone have any ideas on the best way to handle this problem:
> 
> I am generating a map and have the layers working great, but I also want
> to do a query every time to in effect reverse geocode the the center of
> the map. I have six layers that I always want to query with a small
> extents that is independent of the zoom scale of the map so I can update
> some fields on the map like STATE, COUNTY, CITY, and STREET say (yeah I
> know I only listed 4 but I have 6 :)
> 
> The problem is that the layers have minscale/maxscale to turn them
> on/off but I want always be able to query these layers.
> 
> I'm using PHP/Mapscript.
> 
> Do I just clone the layers and have the script turn the layers on and
> off?
>   - this seems like a real pain.
> 
> Do I make a second query only mapfile?
> 
> Did I get stupid and overlook some feature already in
> mapserver/mapscript just for this purpose?
> 
> An thoughts would be appreciated.
> 
> Thanks,
>   Steve Woodbridge




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