Open source geospatial UDFs - Development| Alibaba Cloud Documentation Center

This topic describes how to use open source geospatial UDFs for spatial data analysis.

Apache Hive provides a set of open source geospatial UDFs. For more information, see Github. MaxCompute provides native support for Hive UDFs. Therefore, you can use Hive geospatial functions in MaxCompute.

Note If you encounter any issues when you use UDFs, submit the issues on GitHub for help.

Prepare local functions

In the Command Prompt, run the following command to download the geospatial UDFs for Hive 2.1.0 (corresponding to Hadoop 2.7.2) to your local device:
```
git clone -b "v2.1.0" --single-branch git@github.com:Esri/spatial-framework-for-hadoop.git
```

Use Maven to create a project.

cd spatial-framework-for-hadoop
mvn clean package -DskipTests -P java-8,hadoop-2.7,hive-2.1

Copy the created JAR package. This JAR package contains all methods of the open source geospatial UDFs.
```
cd ..
cp spatial-framework-for-hadoop/hive/target/spatial-sdk-hive-2.1.1-SNAPSHOT.jar ./spatial-sdk-hive.jar
```

Run the following command to download the JAR packages necessary for the project:

wget https://repo1.maven.org/maven2/com/esri/geometry/esri-geometry-api/2.2.0/esri-geometry-api-2.2.0.jar ./esri-geometry-api.jar
-- The preceding command is equivalent to the following command:
cp ~/.m2/repository/com/esri/geometry/esri-geometry-api/2.2.0/esri-geometry-api-2.2.0.jar ./esri-geometry-api.jar

Register functions in MaxCompute

In the MaxCompute Client, run the following commands to upload the two dependent JAR packages to the target project:
```
ADD JAR esri-geometry-api.jar;
ADD JAR spatial-sdk-hive.jar;
```
For more information about how to use the ADD command, see Add a resource.

Run the following commands to register the functions:

CREATE FUNCTION ST_Aggr_ConvexHull  AS  'com.esri.hadoop.hive.ST_Aggr_ConvexHull' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Aggr_Intersection    AS  'com.esri.hadoop.hive.ST_Aggr_Intersection'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Aggr_Union   AS  'com.esri.hadoop.hive.ST_Aggr_Union'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Area AS  'com.esri.hadoop.hive.ST_Area'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsBinary AS  'com.esri.hadoop.hive.ST_AsBinary'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsGeoJson    AS  'com.esri.hadoop.hive.ST_AsGeoJson'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsJson   AS  'com.esri.hadoop.hive.ST_AsJson'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsShape  AS  'com.esri.hadoop.hive.ST_AsShape' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsText   AS  'com.esri.hadoop.hive.ST_AsText'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Bin  AS  'com.esri.hadoop.hive.ST_Bin' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_BinEnvelope  AS  'com.esri.hadoop.hive.ST_BinEnvelope' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Boundary AS  'com.esri.hadoop.hive.ST_Boundary'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Buffer   AS  'com.esri.hadoop.hive.ST_Buffer'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Centroid AS  'com.esri.hadoop.hive.ST_Centroid'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Contains AS  'com.esri.hadoop.hive.ST_Contains'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_ConvexHull   AS  'com.esri.hadoop.hive.ST_ConvexHull'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_CoordDim AS  'com.esri.hadoop.hive.ST_CoordDim'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Crosses  AS  'com.esri.hadoop.hive.ST_Crosses' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Difference   AS  'com.esri.hadoop.hive.ST_Difference'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Dimension    AS  'com.esri.hadoop.hive.ST_Dimension'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Disjoint AS  'com.esri.hadoop.hive.ST_Disjoint'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Distance AS  'com.esri.hadoop.hive.ST_Distance'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_EndPoint AS  'com.esri.hadoop.hive.ST_EndPoint'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Envelope AS  'com.esri.hadoop.hive.ST_Envelope'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_EnvIntersects    AS  'com.esri.hadoop.hive.ST_EnvIntersects'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Equals   AS  'com.esri.hadoop.hive.ST_Equals'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_ExteriorRing AS  'com.esri.hadoop.hive.ST_ExteriorRing'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeodesicLengthWGS84  AS  'com.esri.hadoop.hive.ST_GeodesicLengthWGS84' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomCollection   AS  'com.esri.hadoop.hive.ST_GeomCollection'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Geometry AS  'com.esri.hadoop.hive.ST_Geometry'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeometryN    AS  'com.esri.hadoop.hive.ST_GeometryN'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeometryType AS  'com.esri.hadoop.hive.ST_GeometryType'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromGeoJson  AS  'com.esri.hadoop.hive.ST_GeomFromGeoJson' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromJson AS  'com.esri.hadoop.hive.ST_GeomFromJson'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromShape    AS  'com.esri.hadoop.hive.ST_GeomFromShape'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromText AS  'com.esri.hadoop.hive.ST_GeomFromText'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromWKB  AS  'com.esri.hadoop.hive.ST_GeomFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_InteriorRingN    AS  'com.esri.hadoop.hive.ST_InteriorRingN'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Intersection AS  'com.esri.hadoop.hive.ST_Intersection'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Intersects   AS  'com.esri.hadoop.hive.ST_Intersects'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Is3D AS  'com.esri.hadoop.hive.ST_Is3D'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsClosed AS  'com.esri.hadoop.hive.ST_IsClosed'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsEmpty  AS  'com.esri.hadoop.hive.ST_IsEmpty' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsMeasured   AS  'com.esri.hadoop.hive.ST_IsMeasured'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsRing   AS  'com.esri.hadoop.hive.ST_IsRing'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsSimple AS  'com.esri.hadoop.hive.ST_IsSimple'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Length   AS  'com.esri.hadoop.hive.ST_Length'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_LineFromWKB  AS  'com.esri.hadoop.hive.ST_LineFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_LineString   AS  'com.esri.hadoop.hive.ST_LineString'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_M    AS  'com.esri.hadoop.hive.ST_M'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxM AS  'com.esri.hadoop.hive.ST_MaxM'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxX AS  'com.esri.hadoop.hive.ST_MaxX'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxY AS  'com.esri.hadoop.hive.ST_MaxY'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxZ AS  'com.esri.hadoop.hive.ST_MaxZ'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinM AS  'com.esri.hadoop.hive.ST_MinM'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinX AS  'com.esri.hadoop.hive.ST_MinX'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinY AS  'com.esri.hadoop.hive.ST_MinY'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinZ AS  'com.esri.hadoop.hive.ST_MinZ'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MLineFromWKB AS  'com.esri.hadoop.hive.ST_MLineFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MPointFromWKB    AS  'com.esri.hadoop.hive.ST_MPointFromWKB'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MPolyFromWKB AS  'com.esri.hadoop.hive.ST_MPolyFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiLineString  AS  'com.esri.hadoop.hive.ST_MultiLineString' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiPoint   AS  'com.esri.hadoop.hive.ST_MultiPoint'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiPolygon AS  'com.esri.hadoop.hive.ST_MultiPolygon'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumGeometries    AS  'com.esri.hadoop.hive.ST_NumGeometries'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumInteriorRing  AS  'com.esri.hadoop.hive.ST_NumInteriorRing' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumPoints    AS  'com.esri.hadoop.hive.ST_NumPoints'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Overlaps AS  'com.esri.hadoop.hive.ST_Overlaps'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Point    AS  'com.esri.hadoop.hive.ST_Point'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointFromWKB AS  'com.esri.hadoop.hive.ST_PointFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointN   AS  'com.esri.hadoop.hive.ST_PointN'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointZ   AS  'com.esri.hadoop.hive.ST_PointZ'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PolyFromWKB  AS  'com.esri.hadoop.hive.ST_PolyFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Polygon  AS  'com.esri.hadoop.hive.ST_Polygon' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Relate   AS  'com.esri.hadoop.hive.ST_Relate'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SetSRID  AS  'com.esri.hadoop.hive.ST_SetSRID' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SRID AS  'com.esri.hadoop.hive.ST_SRID'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_StartPoint   AS  'com.esri.hadoop.hive.ST_StartPoint'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SymmetricDiff    AS  'com.esri.hadoop.hive.ST_SymmetricDiff'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Touches  AS  'com.esri.hadoop.hive.ST_Touches' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Union    AS  'com.esri.hadoop.hive.ST_Union'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Within   AS  'com.esri.hadoop.hive.ST_Within'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_X    AS  'com.esri.hadoop.hive.ST_X'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Y    AS  'com.esri.hadoop.hive.ST_Y'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Z    AS  'com.esri.hadoop.hive.ST_Z'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';

Test a UDF

Submit an SQL statement in the MaxCompute client (odpscmd) to test whether a UDF functions properly.

-- Enable Hive compatibility and submit a UDF for testing.
set odps.sql.hive.compatible=true;
SELECT ST_AsText(ST_Point(1, 2));

The following response indicates that the UDF package is installed:

+-----+
| _c0 |
+-----+
| POINT (1 2) |
+-----+