RE: [mapserver-users] Difference in appearance between mode=map andWMS
Roger: you can use MapScript WxS http://mapserver.gis.umn.edu/docs/howto/wxs_mapscript as an approach to run a WMS request via mapscript. Maybe that can work for you? ..Tom -Original Message- From: [EMAIL PROTECTED] on behalf of Roger André Sent: Mon 08-Dec-08 16:21 To: Julien-Samuel Lacroix Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Difference in appearance between mode=map andWMS Hi Julien, That makes sense, but it doesn't work. I modified my mapfile so that I now generate a 20_deg x 20_deg tile that is 600_pixels x 600_pixels. If I georeference that image using the extents, I still get incorrect placement. Maybe if I choose an output projection which always has square pixels, like spherical mercator (?) this will work. I'll give it a shot. Is there any way to give a WMS request via mapscript and NOT go through CGI? Roger -- On Mon, Dec 8, 2008 at 12:25 PM, Julien-Samuel Lacroix [EMAIL PROTECTED] wrote: Hi, I guess would be that the WMS use non-square pixels. So if your BBOX x/y (rectangle in your case) doesn't match you WIDTH/HEIGHT ratio (square in your case) the map will appear stretched. MapServer will actually stretch the map to fit the extent in the WIDTH/HEIGHT. The mode=map don't do that. If your extent doesn't have the same ratio, it adds some degree in your extent to fit the size. Make sure your BBOX and EXTENT are a square in your requests and retry Julien Roger André wrote: Hi All, I think I'm having an instance of cranial flatulation, but maybe not. Hopefully you can set me straight. I need to create an image with Mapserver using mapscript that I can then georeference manually and use in another application. It needs to look exactly the same as the image I can already generate via a WMS call that looks like this: http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/hydro/hydro.map SERVICE=WMS version=%221.1.1%22 REQUEST=GetMap LAYERS=imagery STYLES=BBOX=-125,39,-108,54 WIDTH=600 HEIGHT=600 FORMAT=png SRS=epsg:4326 I'm testing my mapscript parameters using a simple mode=map call to Mapserver, and the results I'm getting so far don't match the appearance of the WMS output at all. My mapfile has the following extent and projection info in it: PROJECTION init=epsg:4326 END EXTENT -125.0 39.0 -108.0 54.0 SIZE 600 600 In addition to the mapfile projection specification, I am also specifying the same projection info in each of my LAYERS as well. Is it possible to do what I'm trying to accomplish here? Thanks, Roger -- ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users -- Julien-Samuel Lacroix Mapgears http://www.mapgears.com/ ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Difference in appearance between mode=map andWMS
Perfect, yes. That should do exactly what I need. I'd forgotten about those OWSRequests. Tilecache uses those in its MapServerLayer requests as well. Thanks very much Tom -- On Mon, Dec 8, 2008 at 2:33 PM, Kralidis,Tom [Ontario] [EMAIL PROTECTED] wrote: Roger: you can use MapScript WxS http://mapserver.gis.umn.edu/docs/howto/wxs_mapscript as an approach to run a WMS request via mapscript. Maybe that can work for you? ..Tom -Original Message- From: [EMAIL PROTECTED] on behalf of Roger André Sent: Mon 08-Dec-08 16:21 To: Julien-Samuel Lacroix Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Difference in appearance between mode=map andWMS Hi Julien, That makes sense, but it doesn't work. I modified my mapfile so that I now generate a 20_deg x 20_deg tile that is 600_pixels x 600_pixels. If I georeference that image using the extents, I still get incorrect placement. Maybe if I choose an output projection which always has square pixels, like spherical mercator (?) this will work. I'll give it a shot. Is there any way to give a WMS request via mapscript and NOT go through CGI? Roger -- On Mon, Dec 8, 2008 at 12:25 PM, Julien-Samuel Lacroix [EMAIL PROTECTED] wrote: Hi, I guess would be that the WMS use non-square pixels. So if your BBOX x/y (rectangle in your case) doesn't match you WIDTH/HEIGHT ratio (square in your case) the map will appear stretched. MapServer will actually stretch the map to fit the extent in the WIDTH/HEIGHT. The mode=map don't do that. If your extent doesn't have the same ratio, it adds some degree in your extent to fit the size. Make sure your BBOX and EXTENT are a square in your requests and retry Julien Roger André wrote: Hi All, I think I'm having an instance of cranial flatulation, but maybe not. Hopefully you can set me straight. I need to create an image with Mapserver using mapscript that I can then georeference manually and use in another application. It needs to look exactly the same as the image I can already generate via a WMS call that looks like this: http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/hydro/hydro.map SERVICE=WMS version=%221.1.1%22 REQUEST=GetMap LAYERS=imagery STYLES=BBOX=-125,39,-108,54 WIDTH=600 HEIGHT=600 FORMAT=png SRS=epsg:4326 I'm testing my mapscript parameters using a simple mode=map call to Mapserver, and the results I'm getting so far don't match the appearance of the WMS output at all. My mapfile has the following extent and projection info in it: PROJECTION init=epsg:4326 END EXTENT -125.0 39.0 -108.0 54.0 SIZE 600 600 In addition to the mapfile projection specification, I am also specifying the same projection info in each of my LAYERS as well. Is it possible to do what I'm trying to accomplish here? Thanks, Roger -- ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users -- Julien-Samuel Lacroix Mapgears http://www.mapgears.com/ ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Difference in appearance between mode=map andWMS
Roger, I don't know if this would help, but I recently came across a similar problem which was fixed by adding the processing directive to the layer: PROCESSING RESAMPLE=NEAREST This fixed a problem when zooming in very close on a raster layer. Apparently without this, mapserver changes the extent so that whole source pixels are included and not split. More here... http://www.nabble.com/Raster-alignment-problem-td19900625.html Cheers, Adam On Mon, Dec 8, 2008 at 2:33 PM, Kralidis,Tom [Ontario] [EMAIL PROTECTED] wrote: Roger: you can use MapScript WxS http://mapserver.gis.umn.edu/docs/howto/wxs_mapscript as an approach to run a WMS request via mapscript. Maybe that can work for you? ..Tom -Original Message- From: [EMAIL PROTECTED] on behalf of Roger André Sent: Mon 08-Dec-08 16:21 To: Julien-Samuel Lacroix Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Difference in appearance between mode=map andWMS Hi Julien, That makes sense, but it doesn't work. I modified my mapfile so that I now generate a 20_deg x 20_deg tile that is 600_pixels x 600_pixels. If I georeference that image using the extents, I still get incorrect placement. Maybe if I choose an output projection which always has square pixels, like spherical mercator (?) this will work. I'll give it a shot. Is there any way to give a WMS request via mapscript and NOT go through CGI? Roger -- On Mon, Dec 8, 2008 at 12:25 PM, Julien-Samuel Lacroix [EMAIL PROTECTED] wrote: Hi, I guess would be that the WMS use non-square pixels. So if your BBOX x/y (rectangle in your case) doesn't match you WIDTH/HEIGHT ratio (square in your case) the map will appear stretched. MapServer will actually stretch the map to fit the extent in the WIDTH/HEIGHT. The mode=map don't do that. If your extent doesn't have the same ratio, it adds some degree in your extent to fit the size. Make sure your BBOX and EXTENT are a square in your requests and retry Julien Roger André wrote: Hi All, I think I'm having an instance of cranial flatulation, but maybe not. Hopefully you can set me straight. I need to create an image with Mapserver using mapscript that I can then georeference manually and use in another application. It needs to look exactly the same as the image I can already generate via a WMS call that looks like this: http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/hydro/hydro.map SERVICE=WMS version=%221.1.1%22 REQUEST=GetMap LAYERS=imagery STYLES=BBOX=-125,39,-108,54 WIDTH=600 HEIGHT=600 FORMAT=png SRS=epsg:4326 I'm testing my mapscript parameters using a simple mode=map call to Mapserver, and the results I'm getting so far don't match the appearance of the WMS output at all. My mapfile has the following extent and projection info in it: PROJECTION init=epsg:4326 END EXTENT -125.0 39.0 -108.0 54.0 SIZE 600 600 In addition to the mapfile projection specification, I am also specifying the same projection info in each of my LAYERS as well. Is it possible to do what I'm trying to accomplish here? Thanks, Roger -- ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users -- Julien-Samuel Lacroix Mapgears http://www.mapgears.com/ ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
