[mapserver-users] Problem using WMS GetFeatureInfo in OpenLayers with different projections

[Rahkonen Jukka (Tike)]

Hi,

Just to eliminate one possibility, is the result the same if you use one DEM raster as a source instead of tileindex?

-Jukka Rahkonen-

 Dejan Gambin wrote:

> Since I didn't solve this yet, do you think it could be a bug and/or should I try
> with some newer MapServer version? I am currently using 6.0.3
> 
> Thx
> 
> Dejan Gambin
> 
> On 22. sij. 2014., at 10:35, Dejan Gambin wrote:
> 
> > Sorry for being late...
> >
> > So, I have tested it all with browser of course. Here are some working and
> non-working requests:
> >
> > Mapfile part:
> >
> >  PROJECTION
> >    "init=epsg:4326"
> >  END
> >  METADATA
> >    "wms_srs"   "EPSG:4326"
> >    "wms_title"  "aster_dem"
> >    "gml_include_items" "value_0"
> >    "gml_value_0_alias" "Nadmorska_visina"
> >  END
> >  TILEINDEX "../aster/aster_index"  #original raster in 4326
> >
> >
> > Working GetMap request in 900913:
> >
> > http://mydomain.com/cgi-
> bin/mywms/?SERVICE=WMS&VERSION=1.1.1&REQUEST=G
> >
> etMap&LAYERS=aster_dem_info&STYLES=&SRS=EPSG:900913&FORMAT=image
> /png&W
> >
> IDTH=400&HEIGHT=300&BBOX=1496080.301904,5576310.226428,1593919.698
> 096,
> > 5649689.773572
> >
> > Non-working GetFeatureInfo request in 900913:
> >
> > http://mydomain.com/cgi-
> bin/mywms/?SERVICE=WMS&VERSION=1.1.1&REQUEST=G
> >
> etFeatureInfo&LAYERS=aster_dem_info&STYLES=&SRS=EPSG:900913&FORMAT
> =ima
> >
> ge/png&WIDTH=400&HEIGHT=300&BBOX=1496080.301904,5576310.226428,1
> 593919
> >
> .698096,5649689.773572&QUERY_LAYERS=aster_dem_info&INFO_FORMAT=g
> ml&X=2
> > 00&Y=100
> >
> > Working GetMap request in 4326:
> >
> > http://mydomain.com/cgi-
> bin/mywms/?SERVICE=WMS&VERSION=1.1.1&REQUEST=G
> >
> etMap&LAYERS=aster_dem_info&STYLES=&SRS=EPSG:4326&FORMAT=image/p
> ng&WID
> > TH=400&HEIGHT=300&BBOX=13.439518,44.712096,14.318424,45.178647
> >
> > Working GetFeatureInfo request in 4326:
> >
> > http://mydomain.com/cgi-
> bin/mywms/?SERVICE=WMS&VERSION=1.1.1&REQUEST=G
> >
> etFeatureInfo&LAYERS=aster_dem_info&STYLES=&SRS=EPSG:4326&FORMAT=i
> mage
> >
> /png&WIDTH=400&HEIGHT=300&BBOX=13.439518,44.712096,14.318424,45.17
> 8647
> > &QUERY_LAYERS=aster_dem_info&INFO_FORMAT=gml&X=200&Y=100
> >
> >
> >
> >
> >
> >
> > On 17. sij. 2014., at 13:52, Rahkonen Jukka (Tike) wrote:
> >
> >> Hi,
> >>
> >> Please show us the complete GetFeatureInfo requests for both cases. Server
> urls are not interesting but all the WMS parameters. Have you already tried to
> send them from browser? Testing with OpenLayers is waste of time because you
> can't control what really happens but with hand written requests you are the
> master.
> >>
> >> -Jukka Rahkonen-
> >>
> >>
> >> Lars Lingner wrote:
> >>>
> >>> On 17.01.2014 11:10, Dejan Gambin wrote:
> >>>>> What is the mywms? MapServer binary, wrapper script, ...?
> >>>> wrapper script. Something like:
> >>>>
> >>>> #! /bin/sh MS_MAPFILE=/path_to_my_map_file export MS_MAPFILE
> >>>> /usr/lib/cgi-bin/mapserv6
> >>>>
> >>>
> >>> AFAIK nothing wrong here.
> >>>
> >>>>>
> >>>>> Did you check the actual requests? Does the bbox parameter fit to
> >>>>> the srs? Could you compare a working GetFeatureInfo request in
> >>>>> 900913 with a failing one in 4326?
> >>>> Yes, bbox parameter fits to srs in both cases. So, if I put
> >>>> bbox/srs params in 426 everything works, if I put them in 900913
> >>>> then error happens
> >>>
> >>> Does other maps work with 900913?
> >>>
> >>> I would check which pro4 epsg file mapserver is using, check if
> >>> there is a definition for 90013 and if it looks like
> >>>
> >>> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
> >>> ++y_0=0
> >>> +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs
> >>>
> >>> On the other hand, if GetMap ist working fine, projection definition
> >>> should be fine too. Just thinking out loud...
> >>>
> >>>
> >>>>>
> >>>>> Raise the debug level to 3 at map level and layer level. You can
> >>>>> let MapServer write its own error logfile, so your apache log
> >>>>> stays clean.
> >>>
> >>> Could you find anything in the MapServer log file?
> >>>
> >>> Here I would identify a working 4326 GFI request and compare the
> >>> corresponding log with a 900913 request. There should be a difference.
> >>>
> >>>
> >>> Best wishes,
> >>>
> >>> Lars
> >>>
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