[mapserver-dev] MapServer SOS GetObservation Problem
EbR at HiM Poorazizi
mepa1363 at yahoo.com
Fri Feb 10 17:17:48 EST 2012
I tried to set up MapServer SOS and could run GetCapabilities and DecsribeSensor perfectly. But I faced a problem regarding to GetObservation: the SOS doesn't return anything. You may see the map file I have created below:
MAP
NAME "SOS_DEMO"
STATUS ON
SIZE 400 300
EXTENT -180 -90 180 90
UNITS METERS
SHAPEPATH "C:\ms4w\apps\tutorial\data"
IMAGECOLOR 255 255 255
WEB
IMAGEPATH "C:\ms4w\apps\tutorial\templates"
IMAGEURL "C:\ms4w\apps\tutorial\images"
METADATA
"sos_onlineresource" "http://127.0.0.1:8282/cgi-bin/mapserv.exe?map=c:/ms4w/mysos.map?"
"sos_title" "My SOS Demo Server"
"sos_srs" "EPSG:4326"
"sos_enable_request" "*"
END
END
PROJECTION
"init=epsg:4326"
END
LAYER
NAME "sos_point"
METADATA
"sos_procedure" "ifgi-sensor-1"
"sos_offering_id" "WQ1289"
"sos_observedproperty_id" "Water Quality"
"sos_describesensor_url" "http://127.0.0.1:8181/DescribeSensor.xml"
END
TYPE POINT
STATUS ON
DATA 'sospoint'
PROJECTION
"init=epsg:4326"
END
CLASS
NAME 'sospoint'
STYLE
COLOR 255 128 128
END
END
END
END
As you see, I tried to retrieve sensor data from a shapefile. The message returned by the SOS is:
<om:ObservationCollection xmlns:gml="http://www.opengis.net/gml" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:swe="http://www.opengis.net/swe/1.0.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:sos="http://www.opengis.net/sos/1.0" xmlns:ms="http://mapserver.gis.umn.edu/mapserver" xmlns:om="http://www.opengis.net/om/1.0" gml:id="WQ1289" xsi:schemaLocation="http://www.opengis.net/om/1.0 http://schemas.opengis.net/om/1.0.0/om.xsd http://mapserver.gis.umn.edu/mapserver http://127.0.0.1:8282/cgi-bin/mapserv.exe?map=c:/ms4w/mysos.map?service=WFS&version=1.1.0&request=DescribeFeatureType&typename=sos_point">
<om:member>
<om:Observation>
<om:procedure xlink:href="urn:ogc:def:procedure:ifgi-sensor-1"/>
<om:observedProperty>
<swe:CompositePhenomenon gml:id="Water Quality" dimension="3">
<swe:component xlink:href="urn:ogc:def:property:OGC-SWE:1:Id"/>
<swe:component xlink:href="urn:ogc:def:property:OGC-SWE:1:sensor_nam"/>
<swe:component xlink:href="urn:ogc:def:property:OGC-SWE:1:sensor_val"/>
</swe:CompositePhenomenon>
</om:observedProperty>
<om:resultDefinition>
<swe:DataBlockDefinition>
<swe:components>
<swe:DataRecord/>
</swe:components>
<swe:encoding>
<swe:TextBlock tokenSeparator="," blockSeparator=" " decimalSeparator="."/>
</swe:encoding>
</swe:DataBlockDefinition>
</om:resultDefinition>
<om:result></om:result>
</om:Observation>
</om:member>
</om:ObservationCollection>
Although I put 6 observations into the shapefile but the SOS doesn't return any. I have also tested it by retrieving data from PostGIS and it did not work. Would you please let me know what I should do to resolve the problem?!
Thanks,
Ebrahim
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