akrherz on IRC gave me the fix:
http://imaptools.com:8080/cgi-bin/mapserv?mode=map&map.projection=init=epsg:900913&map=/u/data/tiger2013-maps/tiger2013-mc.map&layers=all&imagetype=jpeg&MAPSIZE=541+522&map.scalebar=status+embed+units+feet&map.units=meters&SCALEDENOM=3000&MAPXY=-7946835.7326273+5254288.4981293
When you change the projection you ALSO have to change the map.units
I so should have known that. Duh!
-Steve
On 3/14/2014 4:22 PM, Stephen Woodbridge wrote:
On 3/14/2014 2:08 PM, Humberto Cereser Ibanez wrote:
Hi Steve,
Em Sex, 2014-03-14 às 11:25 -0400, Stephen Woodbridge escreveu:
Hi all,
I'm trying to construct a mapserver URL to fetch an image from php. I'm
change some of the mapfile parameters in the url. Do I need validation
blocks for these changes? I assume I do not because I am getting a scale
bar. I'm only getting a blank image.
I think your assumption is right, because I changed the map.projection
and MAPXY parameter and the URL worked
http://imaptools.com:8080/cgi-bin/mapserv?mode=map&map.projection=init=epsg:4326&map=/u/data/tiger2013-maps/tiger2013-mc.map&layers=all&imagetype=jpeg&MAPSIZE=541+522&map.scalebar=status+embed+units+feet&SCALEDENOM=3000&MAPXY=-71.38764+42.61986
Right I tried that also, and I tried putting in an invalid projections
and it threw an appropriate error so I think the syntax is correct.
http://imaptools.com:8080/cgi-bin/mapserv?mode=map&map.projection=init=epsg:900913&map=/u/data/tiger2013-maps/tiger2013-mc.map&layers=all&imagetype=jpeg&MAPSIZE=541+522&map.scalebar=status+embed+units+feet&SCALEDENOM=3000&MAPXY=-7946835.7326273+5254288.4981293
The projection for the map object is epsg:4326 in the mapfile.
I appear to be getting a png image despite the request for a jpeg?
MapServer version 6.2.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ
SUPPORTS=GD SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
SUPPORTS=SVG_SYMBOLS SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER
SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI
SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR
INPUT=GDAL INPUT=SHAPEFILE
The MAPXY should be equivalent to -71.38764, 42.61986 if I did the
conversion correctly.
Any idea what I'm doing wrong here?
May be nothing wrong, but the lack of projection in each layer of your
WMS mapfile. Just a guess.
It as projection block in all layers. And I can change the projection in
WMS, so this seems like a bug in CGI. The bug might be in my
understanding of things :)
Looking more like a bug at this point.
-Steve W
And it works if I don't change the projection:
http://imaptools.com:8080/cgi-bin/mapserv?mode=map&map=/u/data/tiger2013-maps/tiger2013-mc.map&layers=all&MAP_IMAGETYPE=jpeg&MAPSIZE=541+522&map.scalebar=status+embed+units+feet&SCALEDENOM=3000&MAPXY=-71.38764+42.61986
And it works as WMS:
http://imaptools.com:8080/cgi-bin/mapserv?MAP=%2Fu%2Fdata%2Ftiger2013-maps%2Ftiger2013.map&FORMAT=image%2Fjpeg&MAP_IMAGETYPE=jpeg&LAYERS=Tiger_2013&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=-7947363.3342296,5253914.7041195,-7946527.3042538,5254571.5848149&WIDTH=700&HEIGHT=550
Thanks,
-Steve
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Best regards,
Humberto Cereser Ibanez
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