[OpenLayers-Users] Fwd: On SHP files, projections and SRS

[Marcos Cobeña]

Hi Chris,

First of all, really thanks for your effort helping us, thanks mate.

Asking for the extent using ogrinfo, and changing WMS query to fit my
requirements:

"
http://localhost:8080/cgi-bin/DGIS/mapserv.exe?MAP=DGIS_12c.map&LAYERS=12c_linea&TRANSPARENT=true&FORMAT=image/png&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application/vnd.ogc.se_inimage&SRS=EPSG:4326&BBOX=191237.676635,4092673.220195,196695.233917,4099589.678689&width=256&HEIGHT=256
"

, MapServer returns the expected image, as you can see attached.

Then, I have to change *something* (maxResolution maybe) in OpenLayers
to properly build WMS queries, any hint? :-)

Again, really thanks in advance, OL is really really *coo*l, :-)

2006/7/21, Christopher Schmidt <crschmidt at crschmidt.net>:
> On Fri, Jul 21, 2006 at 12:12:04PM +0200, Marcos Cobeña wrote:
> >                       "wms_onlineresource" "http://localhost:8080/cgi-bin/DGIS/mapserv.exe?map=DGIS_12c.map&"
> >               NAME "12c_linea"
> >               TYPE LINE
> >               STATUS ON
> >               DATA Data/12c/12c_linea
>
>
> > GET /cgi-bin/DGIS/mapserv.exe?MAP=DGIS_12c.map&LAYERS=12c_linea&TRANSPARENT=true&FORMAT=image/png&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application/vnd.ogc.se_inimage&SRS=EPSG:4326&BBOX=-180,25.200000000000003,-64.8,140.4&WIDTH=256&HEIGHT=256
> > HTTP/1.1
>
> Run ogrinfo -sum /path/to/Data/12c/12c_linea 12c_linea
>
> You should see something like:
>
> Layer name: zt25_d00
> Geometry: Polygon
> Feature Count: 648
> Extent: (-73.508142, 41.237964) - (-69.928261, 42.886589)
>
> Use that extent, but copy paste it into your WMS URL:
>
> http://localhost:8080/cgi-bin/DGIS/mapserv.exe?MAP=DGIS_12c.map&LAYERS=12c_linea&TRANSPARENT=true&FORMAT=image/png&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application/vnd.ogc.se_inimage&SRS=EPSG:4326&BBOX=-73,41,-69,42&width=256&HEIGHT=256
>
> Obviously this is just an example -- you'll need to modify the data to
> fit what your ogrinfo says, rather than using mine :)
>
> This should let you see whether the data renders at all, and also get an
> idea for where the data should be in the world.
>
> If you don't get any data, then the problem is likely with your
> Mapserver set up, and you may want to ask the question to the
> Mapserver_Users mailing list, where you'll probably get much more
> competent help :) I don't see any indication of a problem in OpenLayers
> -- it seems to be requesting your WMS tiles perfectly -- so the next
> step is to go to figure out what's wrong with the WMS output.
>
> If you get the WMS working, and OpenLayers still doesn't seem to be,
> please feel free to come back to the list with more questions.
> --
> Christopher Schmidt
> Web Developer
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> Users at openlayers.org
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>


--
Marcos - http://www.youcannoteatbits.org



-- 
Marcos - http://www.youcannoteatbits.org
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