MWF GetFeatureInfo problem solved

[Dylan Beaudette]

On Sunday 06 January 2008, nelson guda wrote:
> It works! Thanks much!
> That was definitely the issue.  Thanks also to Josh for spending a
> lot of time trying to help me figure this out.
>
> Here is a summary of the problem for the record:
>
> I was trying to get the WMS GetFeatureInfo request working on my
>
> mapserver copy.  I kept getting a response that looked like this:
> > GetFeatureInfo results:
> >
> > Layer 'ira_fill2'
> > Feature 689:
>
> The solution was to put  'wms_include_items' 'all' in the METADATA
> block for the layer.
>
> You can see the results here: http://roadlessland.org
> It is a site that allows users to get info about inventoried roadless
> areas in US Forest Service lands.  The spatial data is a shapefile
> that is about 32mb.  The site uses Google maps and overlays the map
> with a wms layer from mapserver.  User clicks on the map are
> processed with a GetFeatureInfo request to mapserver.
>
> Thanks for all your help, everyone.
>
> nelson
>
> On Jan 6, 2008, at 9:35 AM, Arnd Wippermann wrote:
> > Hi Nelson,
> >
> > put this
> >
> >     'wms_include_items' 'all'
> > in the METADATA block for your layer.
> >
> > Mit freundlichen Grüssen
> >
> > Arnd Wippermann
> > http://gis.ibbeck.de/ginfo/
> >
> >
> >
> > Von: UMN MapServer Users List [mailto:MAPSERVER-
> > USERS at LISTS.UMN.EDU] Im Auftrag von nelson guda
> > Gesendet: Freitag, 4. Januar 2008 22:59
> > An: MAPSERVER-USERS at LISTS.UMN.EDU
> > Betreff: Re: [UMN_MAPSERVER-USERS] WFS request options
> >
> > Thanks Josh,
> >
> > I looked over the WMS GetFeatureInfo request, and this is exactly
> > what I need. For some reason, though the only data I am getting
> > back looks like this:
> >
> > GetFeatureInfo results:
> >
> > Layer 'ira_fill2'
> > Feature 689:
> >
> >
> > The feature number appears to correspond to the correct place in
> > the dbf file, but none of the rest of the feature data is being
> > returned. I don't understand. Does anyone have any ideas?
> >
> > thanks,
> > nelson
> >
> >
> > Here is the mapfile and request that I made:
> >
> > Request:
> > http://thewildwoodstudios.com/cgi-bin/mapserv?map=../roadlessland/
> > maps/
> > ira.map&REQUEST=GetFeatureInfo&SERVICE=WMS&reaspect=false&VERSION=1.1.
> > 1&LAYERS=ira_fill2&STYLES=default&FORMAT=image/
> > gif&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&SRS=EPSG:
> > 4326&WIDTH=256&HEIGHT=256&QUERY_LAYERS=ira_fill2&x=254&y=165&BBOX=-122
> > .16796875,46.37725420510028,-122.080078125,46.4378568950242
> >
> > Mapfile:
> >
> > MAP
> >
> > NAME "Roadless"
> > STATUS ON
> > SIZE 800 600
> > STATUS ON
> > EXTENT -124.40950012207 18.2457218170166 -65.7071533203125
> > 49.0011405944824
> > IMAGETYPE PNG
> > SHAPEPATH "../shapefiles"
> > FONTSET ../fonts/fonts.txt
> >
> >
> > PROJECTION
> > "init=epsg:54004"
> > END
> >
> > WEB
> > IMAGEPATH "/tmp/"
> > IMAGEURL "/tmp/"
> > METADATA
> > "wms_title" "ira_wms"
> > "wms_onlineresource" "http://thewildwoodstudios.com/cgi-bin/mapserv?
> > map=../roadlessland/maps/ira.map&"
> > "wms_srs" "EPSG:4326 EPSG:54004 EPSG:4269"
> > END
> > END
> >
> >
> > LAYER
> > NAME "ira_fill2"
> > TYPE POLYGON
> > METADATA
> > "wms_title" "ira_fill2"
> > "wms_srs" "EPSG:4326 EPSG:54004"
> > END
> >
> >
> > PROJECTION
> > "init=epsg:4269"
> > END
> > DATA ira_by_name_nad83
> > STATUS ON
> > TRANSPARENCY 75
> > LABELITEM "NAME"
> > LABELMAXSCALE 1000000
> > TEMPLATE "query.html"
> > TOLERANCE 3
> > TOLERANCEUNITS PIXELS
> > DUMP TRUE
> > CLASSITEM "ID"
> >
> > CLASS
> > STYLE
> > COLOR 0 255 0
> > END
> > LABEL
> > COLOR 0 0 0
> > OUTLINECOLOR 255 255 255
> > MINFEATURESIZE 40
> >
> > TYPE TRUETYPE
> > FONT arial-narrow-italic
> > SIZE 8
> > ANTIALIAS TRUE
> > POSITION cc
> > PARTIALS FALSE
> > MINDISTANCE 300
> > WRAP '/'
> > END
> >
> > END
> > END
> >
> >
> > END
> >
> > On Jan 4, 2008, at 10:48 AM, Josh Livni wrote:
> >> Nelson,
> >>
> >> Using this method, you don't want to make a WFS request - you want
> >> to make a WMS request. The mapserver site has documentation on how
> >> to set up your mapfile to respond to WMS requests (http://
> >> mapserver.gis.umn.edu/docs/howto/wms_server) as well as the
> >> template (which can be very simple for your use case).
> >>
> >> There's a thread on the google groups list about using
> >> getFeatureInfo, but since the guy's WMS is down it's probably not
> >> the best example (though you could still look at his code).
> >> http://openlayers.org/dev/examples/getfeatureinfo.html is another
> >> example that you could probably start with for assistance on the
> >> client side -- you'd need to modify it to work with Google Maps
> >> (eg using Google's methods to get at their bbox and other criteria
> >> while creating the queryUrl, and to parse the result) but the
> >> concept is the same, so this should get you started.
> >>
> >> Also - glad to hear my old comments helped on the roadlessland
> >> site - it looks nice.
> >>
> >> Cheers,
> >>
> >> -Josh
> >>
> >> PS - Please be sure to CC the mapserver list if this doesn't make
> >> sense - others here may well have better ideas on how to help than
> >> me, and chances are if you want to know something, others may be
> >> in the same boat, and thus find the thread helpful.
> >>
> >> nelson guda wrote:
> >>> Hi again, Josh,
> >>>
> >>> I just tried "DescribeFeatureType", which works but the response
> >>> only give the names of the variables. Any idea on how to get the
> >>> actual data about those variables?
> >>>
> >>> many thanks,
> >>> nelson
> >>>
> >>> DescribeFeatureType response:
> >>>
> >>>
> >>> <element name="ira"
> >>> type="ms:iraType"
> >>> substitutionGroup="gml:_Feature" />
> >>>
> >>> <complexType name="iraType">
> >>> <complexContent>
> >>> <extension base="gml:AbstractFeatureType">
> >>> <sequence>
> >>> <element name="msGeometry" type="gml:GeometryPropertyType"
> >>> minOccurs="0" maxOccurs="1"/>
> >>> <element name="NAME" type="string"/>
> >>> <element name="ID" type="string"/>
> >>> </sequence>
> >>> </extension>
> >>> </complexContent>
> >>> </complexType>
> >>>
> >>> On Jan 4, 2008, at 8:53 AM, Josh Livni wrote:
> >>>> This doesn't answer you question exactly, but have you
> >>>> considered using a WMS getFeatureInfo request instead? Then you
> >>>> can use a simple template.html to decide which attributes you
> >>>> want to return for later parsing. I've done this a few times
> >>>> myself with Google Maps.
> >>>>
> >>>> -Josh
> >>>>
> >>>> nelson guda wrote:
> >>>>> Hi all,
> >>>>>
> >>>>> I have an odd request regarding WFS capabilities. Is it
> >>>>> possible to have a WFS mapserver request return gml results
> >>>>> without the geometry data?
> >>>>>
> >>>>> I know that this seems odd, but it makes sense for what I am
> >>>>> doing. I am using a WMS overlay to serve tiles for a large
> >>>>> dataset to an overlay on google maps. In order to query
> >>>>> specific polygons from that dataset (a shapefile), I am using a
> >>>>> WFS GetFeature request. All I need is the id and other
> >>>>> parameters of the feature, but not the geometry data (because
> >>>>> it is already there from the WMS. Right now I am just parsing
> >>>>> out the info I need from the gml at the server level, but it
> >>>>> would be much faster if I could get the WFS to return only the
> >>>>> feature info minus the geometry data. Is this possible?
> >>>>>
> >>>>> Thanks, and thanks for your previous help.
> >>>>>
> >>>>> nelson


Nice site, glad to hear that this is worked out and well documented now.

cheers,

Dylan


-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341