getting map extent when using maxy and scale on cgi interface {Scanned} {Scanned}

[Thomas Chesky]

Zoltan,

Thanks for the answer.

imgext is an input parameter as far as I know. If I know it, then I use imgext to request the map with that particular extent. But in my case I only know the center point (geocoded address), the scale and the image width/height. These are my inputs. Mapserver calculates the extent when drawing the map. How can I ask Mapserver to return this extent (coordinates of bottom-right and top-left of the map) besides returning the rendered image?

So my input is: center lat/lon; scale; width/height pixels of map
Current output: 1) image

Desired output: 1) image and 2) bottom-right/top-left coordinates

Thomas

Siki Zoltan <siki at agt.bme.hu> wrote:
Hi,

Check imgext cgi variable. It holds the minx miny maxx maxy of the actual
map image.

Bye
Zoltan

On Sat, 4 Dec 2004, Thomas Chesky wrote:

> How can I request the map extent (bounding rectangle's coordinates) of the mapreturned by MapServer via the cgi interface when using mapxy and scale params .
>
> I have a cgi get string like this:
> &mapxy=-122.244+37.47502&scale=1&mapsize=600+400
>
> Mapserver returns the image (map) correctly. I would like to know what are the bottom,left and top,right coordinates of the returned map.
>
> Can I do it via the cgi interface (any ascii response is good) or WFS or I have to use PHPmapscript?
>
> Thanks
>
> Thomas
>
>
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