[Geomoose-users] air photo not showing up print when using wms & reprojecting

Tue Apr 20 11:55:19 EDT 2010

   The print_util.php code appears to be limited to requesting WMS images in the 
same projection as the output view/map.

   While it looks like you can specify the SRS as a "params" setting in the Map 
Source (so the WMS server knows which coordinate system you want), the PHP does 
not transform the BBOX coordinates from the view/map projection into the SRS of 
the WMS request.  And even if it did, it does not project (or even warp) the 
returned image to target coordinate system.

   As a side note, I think adding a projection='EPSG:4326' option to the Map 
source tag allows Geomoose to do a warp (as an approximate re-projection).  I 
suppose it could have looked for a <param name="SRS" value="EPSG:4326"/>, but 
there could be a case where the two need to be different.

So the work-around for now is to use mapserver on your server as a WMS client to 
do the re-projection.  Unless I missed something...

Best Regards,
Brent Fraser

Mark Volz wrote:
> Len,
> 
> It appears that GeoMoose is sending the request for printing in County
> Coordinates, which the lmic server doesn't handle.  I wonder if there is a
> way to use the wms directly for viewing the map, but then turn on an
> alternate layer for printing?  My other thoughts are that maybe I could use
> UTM-15, then modify the displayCoordinates in main.js to display the county
> coordinates...
> 
> 
> 
> When Viewing the map:
> 
> http://geoint.lmic.state.mn.us/cgi-bin/wms?LAYER=&SERVICE=WMS&VERSION=1.1.1&R
> EQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&FORMAT=imag
> e%2Fjpeg&LAYERS=fsa2009&SRS=EPSG%3A4326&BBOX=-95.93229014080966,44.4136078637
> 4146,-95.82239333904468,44.45166020637491&WIDTH=2037&HEIGHT=984
> 
> 
> When printing the map:
> 
> http://geoint.lmic.state.mn.us/cgi-bin/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=
> GetMap&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG:127083&FORMAT=ima
> ge/jpeg&WIDTH=800&HEIGHT=700&BBOX=494127.36728056,178566.75342801,513259.4773
> 4712,190556.02122377&LAYERS=fsa2009
> 
> 
> Thanks for your help
> 
> 
> Mark Volz
> GIS Specialist
> Lyon County, MN
> 
> -----Original Message-----
> From: Len Kne [mailto:lkne at houstoneng.com] 
> Sent: Monday, April 19, 2010 4:49 PM
> To: 'bfraser at geoanalytic.com'; Mark Volz
> Cc: geomoose-users at lists.sourceforge.net
> Subject: RE: [Geomoose-users] air photo not showing up print when using wms &
> reprojecting
> 
> Check the URL in the map-source, it cannot have any params on it as the
> print_util script adds a "?" to the end of the string if it is not there.
> Thus if you have something like:
> 
> http://geoint.lmic.state.mn.us/cgi-bin/wms?format=image/jpeg
> 
> the script will do this:
> 
> http://geoint.lmic.state.mn.us/cgi-bin/wms?format=image/jpeg?
> 
> Move the params to tags in the map-source.
> 
> For diagnostics, you can uncomment lines 173 and 174 in php/print_util.php to
> get the URL string, feed that into a browser to see if the server returns any
> info.
> 
> Len
> 
> -----Original Message-----
> From: Brent Fraser [mailto:bfraser at geoanalytic.com] 
> Sent: Monday, April 19, 2010 2:17 PM
> To: Mark Volz
> Cc: geomoose-users at lists.sourceforge.net
> Subject: Re: [Geomoose-users] air photo not showing up print when using wms &
> reprojecting
> 
> Mark,
> 
>   I don't have that particular case, but I notice that there is projection
> support in GM v2.2 print_util.php so it is supposed(?) to work.
> 
>   Since you've got the layer displaying interactively, you have something
> like projection='EPSG:4326' in the map source tag.  Perhaps there's a
> limitation by the WMS server on the number of pixels you can request? 
> Did you try requesting a print with "Image Quality" = standard (this
> will request less pixels)?
> 
> Brent
> 
> 
> 
>> Hi,
>>
>> I noticed that my air photo does not appear to show up my map when I use
>> the
>> "print" tool.  I am reprojecting the air photo.  I am assuming this is
>> either
>> a bug or a limitation.  Has anyone had success with having the air photo
>> show
>> up on the map when using the print tool when the map-source type is  wms
>> and
>> it is being reprojected?
>>
>>
>>
>>
>>
>> Mark Volz
>> GIS Specialist
>> Lyon County, MN
>> 507-532-8218
>>
>>
>>
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> 
> 
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