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	"Extract within distance" algorithms These algorithms allow users to select or extract features from one layer which are within a certain distance of features from another reference layer. The distance checking is heavily optimised, using spatial indices to restrict the number of features retrieved, and also automatically handing the check off to the database server for postgis layers. The distance parameter can also be data-defined. Sponsored by QTIBIA Engineering
		
			
				
	
	
		
			38 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
			
		
		
	
	
			38 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
<?xml version="1.0" encoding="UTF-8"?>
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<xs:schema targetNamespace="http://ogr.maptools.org/" xmlns:ogr="http://ogr.maptools.org/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml" elementFormDefault="qualified" version="1.0">
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<xs:import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/2.1.2/feature.xsd"/>
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<xs:element name="FeatureCollection" type="ogr:FeatureCollectionType" substitutionGroup="gml:_FeatureCollection"/>
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<xs:complexType name="FeatureCollectionType">
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  <xs:complexContent>
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    <xs:extension base="gml:AbstractFeatureCollectionType">
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      <xs:attribute name="lockId" type="xs:string" use="optional"/>
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      <xs:attribute name="scope" type="xs:string" use="optional"/>
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    </xs:extension>
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  </xs:complexContent>
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</xs:complexType>
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<xs:element name="points_within_distance" type="ogr:points_within_distance_Type" substitutionGroup="gml:_Feature"/>
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<xs:complexType name="points_within_distance_Type">
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  <xs:complexContent>
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    <xs:extension base="gml:AbstractFeatureType">
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      <xs:sequence>
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        <xs:element name="geometryProperty" type="gml:PointPropertyType" nillable="true" minOccurs="0" maxOccurs="1"/>
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        <xs:element name="id" nillable="true" minOccurs="0" maxOccurs="1">
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          <xs:simpleType>
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            <xs:restriction base="xs:integer">
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              <xs:totalDigits value="10"/>
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            </xs:restriction>
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          </xs:simpleType>
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        </xs:element>
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        <xs:element name="id2" nillable="true" minOccurs="0" maxOccurs="1">
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          <xs:simpleType>
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            <xs:restriction base="xs:integer">
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              <xs:totalDigits value="10"/>
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            </xs:restriction>
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          </xs:simpleType>
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        </xs:element>
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      </xs:sequence>
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    </xs:extension>
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  </xs:complexContent>
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</xs:complexType>
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</xs:schema>
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