CGI Mapserver: raw URL zooming manipulation

[Matthew Pettis]

I had a typo in the 2nd URL... it should be:

url:
----
http://localhost/cgi-bin/mapserv.exe?zoom=2&img.x=330&img.y=247.5&mapext=189775.375+4810000+761662.375+5472414.5&map=C:/ms4w/Apache/htdocs/tst/race.map&layer=county&mode=map

result:
--------
map image of full extent from mapfile is returned... not the zoomed image.


On Dec 6, 2007 3:03 PM, Matthew Pettis <matthew.pettis at gmail.com> wrote:

> Hi,
>
> I am trying to just do raw CGI calls to do some zooming (trying to see
> what the necessary raw CGI controls are to do certain functions, don't want
> to use templates to do zooming just yet until i understand this), but can't
> seem to do it.  I try to pass a zoom parameter in, but I always get the map
> image of the extent set in my .map file.  Can someone help me with the right
> incantation I need to pass in the address bar?
>
> here's what I have tried to no avail:
>
> relevant mapfile settings (what i think is relevant):
>
> ---------------------------------------------------------------------------
>     ################
>     # Map attributes
>     ################
>   IMAGETYPE   PNG
>   EXTENT      189775.375 4810000 761662.375 5472414.5
>   SIZE        660 495
>
> ---------------------------------------------------------------------------
>
>
> =========================
> url (no zoom) that works:
> ------------------------------------
>
> http://localhost/cgi-bin/mapserv.exe?map=C:/ms4w/Apache/htdocs/tst/race.map&layer=county&mode=map
> result:
> ---------
> the right map of full extent is displayed in my browser
>
> ...
>
> url:
> ----
> http://localhost/cgi-bin/mapserv.exe?zoom=2&img.x=330&img.y=247.5&mapext=&189775.375+4810000+761662.375+5472414.5&map=C:/ms4w/Apache/htdocs/tst/race.map&layer=county&mode=map
>
>
> result:
> ---------
> msDrawMap(): Image handling error. Unable to initialize image.
> msCalculateScale(): General error message. Invalid image extent, minx=-
> 1.000000, miny=-1.000000, maxx=-1.000000, maxy=-1.000000.
> msCalculateScale(): General error message. Invalid image extent, minx=-
> 1.000000, miny=-1.000000, maxx=-1.000000, maxy=-1.000000.
>
> =========================
>
>
> --
> It is from the wellspring of our despair and the places that we are broken
> that we come to repair the world.
> -- Murray Waas




-- 
It is from the wellspring of our despair and the places that we are broken
that we come to repair the world.
-- Murray Waas
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