Developer's Guide - MapGuide Open Source - OSGeo

}
'ResourceId')->item(0);
$featureSourceNode->nodeValue =
$bufferFeatureResId->ToString();
// Get the updated layer definition from the DOM object
// and save it to the session repository using the
// ResourceService object.
$layerDefinition = $doc->saveXML();
$byteSource = new MgByteSource($layerDefinition,
strlen($layerDefinition));
$byteSource->SetMimeType(MgMimeType::Xml);
$tempLayerResId = new MgResourceIdentifier("Session:" .
$sessionId . "//Buffer.LayerDefinition");
$resourceService->SetResource($tempLayerResId,
$byteSource->GetReader(), null);
// Create an MgLayer object based on the new layer definition
// and return it to the caller.
$bufferLayer = new MgLayer($tempLayerResId, $resourceService);
$bufferLayer->SetName("Buffer");
$bufferLayer->SetLegendLabel("Buffer");
$bufferLayer->SetDisplayInLegend(true);
$bufferLayer->SetSelectable(false);
return $bufferLayer;
There is an additional example in the Developer’s Guide samples. It queries
the parcels in the buffer area and selects parcels that match certain criteria.
The selection is done using a query that combines a basic filter and a spatial
filter.
$bufferDist = $srs->
ConvertMetersToCoordinateSystemUnits($bufferRingSize);
$bufferGeometry = $mergedGeometries->Buffer($bufferDist,
$srsMeasure);
// Create a filter to select parcels within the buffer. Combine
// a basic filter and a spatial filter to select all parcels
// within the buffer that are of type "MFG".
$queryOptions = new MgFeatureQueryOptions();
$queryOptions->SetFilter("RTYPE = 'MFG'");
$queryOptions->SetSpatialFilter('SHPGEOM', $bufferGeometry,
MgFeatureSpatialOperations::Inside);
It creates an additional feature source that contains point markers for each of
the selected parcels.
Example | 87