Hi Chuck,
I don't know exactly how your mapserver request is and what parameters
your pass through... but I would suggest you do a quick test by adding
the following repository to your Ubuntu system (hopefully you are
running under hardy, intrepid or jaunty):
https://launchpad.net/~ubuntugis/+archive/ubuntugis-unstable
That repository has MapServer 5.4.2. I would say that if your "unknow
application" uses the same extent unit (meter, degree, etc..) than your
MapServer mapfile... the extent should be respected.
Alan
Chuck Jungmann wrote:
I am a new user of MapServer, using version 5.0.3 from the Ubuntu
repositories. I attempted to compile everything from source, had some
trouble, then decided to use the repository shortcut at least until I
understood how the application works.
I am writing an application where the browser requests a map by setting
the src attribute of an img object. Identifying locations on the
resulting map requires that the application knows the extent.
I calculate the extent of the map from various values, and use the same
algorithms on the server so the browser and the server agree on the
dimensions without having to negotiate. However, when I request the map
from MapServer, the extent of the resulting map is always larger (both x
and y dimensions) than what I requested, although still centered on the
same point.
Is this behavior normal (I don't want to beat my head against the wall
searching for an irrelevant math error)? Is there some setting that
might cause MapServer to more closely match my requested extent? Could
this be an error that was fixed in a more recent version of MapServer?
Any words of wisdom would be appreciated.
Chuck Jungmann
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--
Alan Boudreault
Mapgears
http://www.mapgears.com/
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