Steve,
So the alternative to using imgxy is to send mapserver:
mapxy and mapext and imgext (where mapext=imgext) and imgsize?
Hmm, I think I tried that, but I'll take a closer look.
Sounds like the better solution is just to change Geomoose to use imgxy.
Thanks!
Brent Fraser
Steve Lime wrote:
It's possible to use mapxy in conjunction with TOLERANCEUNITS PIXELS but you
have to understand how pixel size is computed for it to work as expected. The
assumption is that there's a map associated with the point query and it's defined
by a map extent, a width and a height.
I thought that was imgext and imgsize?
So, you'd need to define those somehow
too. If not explicitly set as part of a query the defaults in the mapfile are
used which
is where things could get convoluted. I can't recall what happens if you define
mapxy AND mapext with mode=nquery though, which takes precedence in setting
the query method? (looks ambiguous in the code)
Could be a implementation/support headache...
Practically speaking, if a query or whatever is associated with a map image
regardless
of client environment I *always* use imgxy, imgext and imgsize and populate
those
from the client and let MapServer do the conversion. Works fine with the environments
I use frequently (e.g. OL and dBox). This site does it extensively via OL:
I'm off to hack GeoMoose!
http://www.dnr.state.mn.us/waters/csg/index_beta.html
Steve
Brent Fraser <[email protected]> 10/01/09 10:51 AM >>>
I'd like someone to confirm my understanding of using
nquery/mapxy/TOLERANCE/TOLERANCEUNITS.
GeoMoose v1.6 sets mapxy and imgext (along with mode=nquery and imgsize) CGI
variables when doing an "Identify Feature" operation. I'd like to use
TOLERANCEUNITS PIXELS (and TOLERANCE 3) for my point layer because I think it's
more intuitive over a range of scales (as opposed to TOLERANCEUNITS METERS,
TOLERANCE 500).
This is not possible as using Mapserver's mapxy requires the map file to have
TOLERANCEUNITS METERS to work properly. If I want to use TOLERANCEUNITS PIXELS,
I must use imgxy instead of mapxy because mapserver does not do the conversion
from mapxy mapping coords to imgxy image coords.
Is this correct?
Thanks!
Brent Fraser
_______________________________________________
mapserver-users mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/mapserver-users
_______________________________________________
mapserver-users mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/mapserver-users
