Developer's Guide - MapGuide Open Source - OSGeo

$districtQuery = new MgFeatureQueryOptions();
$districtQuery->SetFilter("Autogenerated_SDF_ID = 1");
$districtResId = new MgResourceIdentifier(
"Library://Samples/Sheboygan/Data/VotingDistricts.FeatureSource");
$featureReader = $featureService->SelectFeatures($districtResId,
"VotingDistricts", $districtQuery);
$featureReader->ReadNext();
$districtGeometryData = $featureReader->GetGeometry('Data');
$agfReaderWriter = new MgAgfReaderWriter();
$districtGeometry = $agfReaderWriter->Read($districtGeometryData);
To convert an MgGeometry object into its WKT representation, use the
MgWktReaderWriter::Write() method, as in the following example:
$wktReaderWriter = new MgWktReaderWriter();
$districtWkt = $wktReaderWriter->Write($districtGeometry);
Examples
The following examples assume that $testArea is an MgGeometry object
defining a polygon, and $testAreaWkt is a WKT description of the polygon.
To create a filter to find all properties owned by Schmitt in the area, use either
of the following sequences:
$queryOptions = new MgFeatureQueryOptions();
$queryOptions->SetFilter("RNAME LIKE 'Schmitt%'");
$queryOptions->SetSpatialFilter('SHPGEOM', $testArea,
MgFeatureSpatialOperations::Inside);
$queryOptions = new MgFeatureQueryOptions();
$queryOptions->SetFilter("RNAME LIKE 'Schmitt%'
AND SHPGEOM inside GEOMFROMTEXT('$testAreaWkt')";
Example: Listing Selected Features
The following example creates a selection, then lists properties from the
selected features.
It selects parcels within the boundaries of District 1 that are owned by Schmitt.
This requires a spatial filter and a basic filter.
Example: Listing Selected Features | 39