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=-122.1
6796875,46.37725420510028,-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
