[mapserver-users] problems when requesting for feature info i n gml format

[Tom.Kralidis at ccrs.nrcan.gc.ca]

Steve / MapServer developers,

w.r.t. this thread, should we start thinking MapServer support for
publishing schemas for features  in GML.2 (or DTDs for GML.1)?  Especially
useful for the forthcoming WFS support in MapServer.

Perhaps:

- a 'shpschema' and / or 'shpdtd' tool which generates an XML schema file

- then, in the .map file, a directive

DTDPATH=/path/to/dtd/dir # for GML.1
SCHEMAPATH=/path/to/schema/dir # for GML.2

..so when a WMS GetFeatureInfo is called, a valid GML document is published.

Thoughts?

..Tom

=================================
Tom Kralidis
Systems Scientist
Canada Centre for Remote Sensing
Tel: (613) 947-1828
http://www.ccrs.nrcan.gc.ca/
=================================



> -----Original Message-----
> From: Hao Ding [mailto:hdi12 at it.canterbury.ac.nz]
> Sent: Monday, September 09, 2002 8:48 PM
> To: Steve Lime
> Cc: mapserver-users at lists.gis.umn.edu
> Subject: Re: [mapserver-users] problems when requesting for 
> feature info
> in gml format
> 
> 
> Thanks, Steve. I've tried set DUMP to TRUE, but unfortunately I got 
> "Internal Server Error". If I comment the sentence "DUMP true", I can 
> get a gml response but no content as I said last time. Do I 
> have to do 
> some setting on the apache http server?
> 
> Thanks,
> Hao
> 
> Steve Lime wrote:
> 
> > You must set DUMP to TRUE for any layer you want GML output 
> for. That's
> > there as a basic security feature.
> > 
> > Steve
> > 
> > Stephen Lime
> > Data & Applications Manager
> > 
> > Minnesota DNR
> > 500 Lafayette Road
> > St. Paul, MN 55155
> > 651-297-2937
> > 
> > 
> >>>>Hao Ding <hdi12 at it.canterbury.ac.nz> 09/07/02 08:50PM >>>
> >>>>
> > Hello,
> > 
> > I got some problems when request GetFeatureInfo to the MapServer for
> > GML 
> > response.
> > 
> > I used itasca demo data as the sample dataset. When 
> requesting the lake
> > 
> > feature using default INFO_FORMAT with the URL below, I can get the
> > results.
> > 
> > 
> http://localhost:8080/cgi-bin/mapserv?VERSION=1.1.0&REQUEST=Ge
tFeatureInfo&SRS=EPSG:4326&BBOX=388014.0,5200400.0,500802.0,5313160.0&WIDTH=
800&HEIGHT=400&FORMAT=image/gif&LAYERS=lakespy2&STYLES=default&TRANSPARENT=T
RUE&QUERY_LAYERS=lakespy2&X=274&Y=192
> 
> 
> GetFeatureInfo results:
> 
> Layer 'lakespy2'
>    Feature 23043:
>      gid = '844'
>      area = '407475.09544'
>      perimeter = '2302.07951'
>      usclass = '421'
>      dowlknum = '31081700'
>      dow_verif = '0'
>      lake_name = ''
>      lake_class = '0'
>      elevation = '1296'
>      acres = '100.687'
>      perfeet = '7553.123'
> 
> If I add the parameter INFO_FORMAT=application/vnd.ogc.gml, the body of
> 
> the gml file I got was empty
> 
> <?xml version="1.0" encoding="ISO-8859-1"?>
> 
> <msGMLOutput
> 	 xmlns:gml="http://www.opengis.net/gml"
> 	 xmlns:xlink="http://www.w3.org/1999/xlink"
> 	 xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance">
> </msGMLOutput>
> 
> I just wonder if I need to do something in the mapfile for gml export?
> I 
>   also don't know what the object "dump" in the mapfile is used for.(I
> 
> saw the sentence "DUMP true" in some Layers).
> 
> Thanks very much for any help!!!
> Hao
> 
>