AW: [UMN_MAPSERVER-USERS] WFS request options

Sun Jan 6 10:35:29 EST 2008

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.m
ap
<http://thewildwoodstudios.com/cgi-bin/mapserv?map=../roadlessland/maps/ira.
map&REQUEST=GetFeatureInfo&SERVICE=WMS&reaspect=false&VERSION=1.1.1&LAYERS=i
ra_fill2&STYLES=default&FORMAT=image/gif&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&S
RS=EPSG:4326&WIDTH=256&HEIGHT=256&QUERY_LAYERS=ira_fill2&x=254&y=165&BBOX=-1
22.16796875,46.37725420510028,-122.080078125,46.4378568950242>
&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
<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

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