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

[Siki Zoltan]

Hi Thomas,

As far as I know imgext an output parameter, mapserver fills it with
extents of actual image, mapext is the input parameter for the next
map generated. Insert [imgext] into your html template and you can see
the values.

Bye
Zoltan


On Sun, 5 Dec 2004, Thomas Chesky wrote:

> 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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