[Mapserver-users] center map on x,y coordinates

[Alexandros Chimarios]

Hi Elisabeth, 

	maybe it's because of the URL( which I told you to try yesterday ;-)) ), try 
this mapxy param without the double quotes "", like that :

http://myserver.com/cgi-bin/mapserver?map=parcel.map&mapxy=x_from_mysql 
y_from_mysql&scale=150000



On Wednesday 05 May 2004 12:13, Elisabeth Nolz wrote:
> hi paco.
> i've tried scale=15000000 or scale=5000, but there's still this error: "
> getNumeric(): Incorrect data type. "
> perhaps you have an idea what's causing this problem.
>
>
> On Tuesday 04 May 2004 16:04, Paco Regodon wrote:
> The scale parameter is not clear, as it is related with RESOLUTION.
>
> If your units are meters, you can calculate your escale using this formula:
>
> scale = ((EXTENT * 100) * RESOLUTION / 2.54 ) / image_width_in_pixels.
>
> RESOLUTION defaults to 72 dpi (dots per inch) but you can change it in the
> mapfile if you need to.
> Just try a big scale (scale=15000000).
>
> Have you tried using MAPXY/BUFFER instead of MAPXY/SCALE?
>
> Paco
>
>
> On Tuesday 04 May 2004 11:24, Elisabeth Nolz wrote:
> hi list.
> in my application i have a drop-down menu with lots of addresses (addresses
> and appropriate x,y coordinates stored in a mysql-database). the user can
> choose one address and then click on the submit-button to show the map
> centered on the chosen address.
> the problem is, that i don't know how i could center my map on x,y
> coordinates.
>
> i found the following entry in the mapserver-user-history:
> "If you have x,y coordinates for the centers of your parcels in your mysql
> database, you can just run your search, grab the results, and redirect to a
> url like:
> http://myserver.com/cgi-bin/mapserver?map=parcel.map&mapxy=x_from_mysql+y_f
>rom_mysql&scale=150000"
>
> i tried this link with my coordinates but it doesn't work this way. could
> someone help me please?
>
> thx,
> elisabeth.
>
>
>
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