Constructors

Read ESRI Shapefile¶

Introduction: Construct a DataFrame from a Shapefile

SQL example:

var spatialRDD = new SpatialRDD[Geometry]
spatialRDD.rawSpatialRDD = ShapefileReader.readToGeometryRDD(sedona.sparkContext, shapefileInputLocation)
var rawSpatialDf = Adapter.toDf(spatialRDD,sedona)
rawSpatialDf.createOrReplaceTempView("rawSpatialDf")
var spatialDf = sedona.sql("""
          | ST_GeomFromWKT(rddshape), _c1, _c2
          | FROM rawSpatialDf
        """.stripMargin)
spatialDf.show()
spatialDf.printSchema()

Note

The path to the shapefile is the path to the folder that contains the .shp file, not the path to the .shp file itself. The file extensions of .shp, .shx, .dbf must be in lowercase. Assume you have a shape file called myShapefile, the path should be XXX/myShapefile. The file structure should be like this:

- shapefile1
- shapefile2
- myshapefile
    - myshapefile.shp
    - myshapefile.shx
    - myshapefile.dbf
    - myshapefile...
- ...

Warning

Please make sure you use ST_GeomFromWKT to create Geometry type column otherwise that column cannot be used in Spatial SQL.

If the file you are reading contains non-ASCII characters you'll need to explicitly set the Spark config before initializing the SparkSession, then you can use ShapefileReader.readToGeometryRDD.

Example:

spark.driver.extraJavaOptions  -Dsedona.global.charset=utf8
spark.executor.extraJavaOptions  -Dsedona.global.charset=utf8

ST_GeomCollFromText¶

Introduction: Constructs a GeometryCollection from the WKT with the given SRID. If SRID is not provided then it defaults to 0. It returns null if the WKT is not a GEOMETRYCOLLECTION.

Format:

ST_GeomCollFromText (Wkt: String)

ST_GeomCollFromText (Wkt: String, srid: Integer)

SQL Example:

SELECT ST_GeomCollFromText('GEOMETRYCOLLECTION (POINT (50 50), LINESTRING (20 30, 40 60, 80 90), POLYGON ((30 10, 40 20, 30 20, 30 10), (35 15, 45 15, 40 25, 35 15)))')

Output:

GEOMETRYCOLLECTION (POINT (50 50), LINESTRING (20 30, 40 60, 80 90), POLYGON ((30 10, 40 20, 30 20, 30 10), (35 15, 45 15, 40 25, 35 15)))

ST_GeomFromEWKB¶

Introduction: Construct a Geometry from EWKB string or Binary. This function is an alias of ST_GeomFromWKB.

Format:

ST_GeomFromEWKB (Wkb: String)

ST_GeomFromEWKB (Wkb: Binary)

SQL Example

SELECT ST_GeomFromEWKB([01 02 00 00 00 02 00 00 00 00 00 00 00 84 D6 00 C0 00 00 00 00 80 B5 D6 BF 00 00 00 60 E1 EF F7 BF 00 00 00 80 07 5D E5 BF])

Output:

LINESTRING (-2.1047439575195312 -0.354827880859375, -1.49606454372406 -0.6676061153411865)

SQL Example

SELECT ST_asEWKT(ST_GeomFromEWKB('01010000a0e6100000000000000000f03f000000000000f03f000000000000f03f'))

Output:

SRID=4326;POINT Z(1 1 1)

ST_GeomFromEWKT¶

Introduction: Construct a Geometry from OGC Extended WKT

Format: ST_GeomFromEWKT (EWkt: String)

SQL example:

SELECT ST_AsText(ST_GeomFromEWKT('SRID=4269;POINT(40.7128 -74.0060)'))

Output:

POINT(40.7128 -74.006)

ST_GeomFromGML¶

Introduction: Construct a Geometry from GML.

Note

This function only supports GML 1 and GML 2. GML 3 is not supported.

Format: ST_GeomFromGML (gml: String)

SQL example:

SELECT ST_GeomFromGML('
    <gml:LineString srsName="EPSG:4269">
        <gml:coordinates>
            -71.16028,42.258729
            -71.160837,42.259112
            -71.161143,42.25932
        </gml:coordinates>
    </gml:LineString>
')

Output:

LINESTRING (-71.16028 42.258729, -71.160837 42.259112, -71.161143 42.25932)

ST_GeomFromGeoHash¶

Introduction: Create Geometry from geohash string and optional precision

Format: ST_GeomFromGeoHash(geohash: String, precision: Integer)

SQL Example

SELECT ST_GeomFromGeoHash('s00twy01mt', 4)

Output:

POLYGON ((0.703125 0.87890625, 0.703125 1.0546875, 1.0546875 1.0546875, 1.0546875 0.87890625, 0.703125 0.87890625))

ST_GeomFromGeoJSON¶

Introduction: Construct a Geometry from GeoJson

Format: ST_GeomFromGeoJSON (GeoJson: String)

SQL Example

SELECT ST_GeomFromGeoJSON('{
   "type":"Feature",
   "properties":{
      "STATEFP":"01",
      "COUNTYFP":"077",
      "TRACTCE":"011501",
      "BLKGRPCE":"5",
      "AFFGEOID":"1500000US010770115015",
      "GEOID":"010770115015",
      "NAME":"5",
      "LSAD":"BG",
      "ALAND":6844991,
      "AWATER":32636
   },
   "geometry":{
      "type":"Polygon",
      "coordinates":[
         [
            [-87.621765, 34.873444],
            [-87.617535, 34.873369],
            [-87.62119, 34.85053],
            [-87.62144, 34.865379],
            [-87.621765, 34.873444]
         ]
      ]
   }
}')

Output:

POLYGON ((-87.621765 34.873444, -87.617535 34.873369, -87.62119 34.85053, -87.62144 34.865379, -87.621765 34.873444))

SQL Example

SELECT ST_GeomFromGeoJSON('{
   "type":"Polygon",
   "coordinates":[
      [
         [-87.621765, 34.873444],
         [-87.617535, 34.873369],
         [-87.62119, 34.85053],
         [-87.62144, 34.865379],
         [-87.621765, 34.873444]
      ]
   ]
}')

Output:

POLYGON ((-87.621765 34.873444, -87.617535 34.873369, -87.62119 34.85053, -87.62144 34.865379, -87.621765 34.873444))

Warning

The way that WherobotsDB reads GeoJSON is different from that in SparkSQL

ST_GeomFromKML¶

Introduction: Construct a Geometry from KML.

Format: ST_GeomFromKML (kml: String)

SQL example:

SELECT ST_GeomFromKML('
    <LineString>
        <coordinates>
            -71.1663,42.2614
            -71.1667,42.2616
        </coordinates>
    </LineString>
')

Output:

LINESTRING (-71.1663 42.2614, -71.1667 42.2616)

ST_GeomFromText¶

Introduction: Construct a Geometry from WKT. If SRID is not set, it defaults to 0 (unknown). Alias of ST_GeomFromWKT

Format:

ST_GeomFromText (Wkt: String)

ST_GeomFromText (Wkt: String, srid: Integer)

SQL Example

SELECT ST_GeomFromText('POINT(40.7128 -74.0060)')

Output:

POINT(40.7128 -74.006)

ST_GeomFromWKB¶

Introduction: Construct a Geometry from WKB string or Binary. This function also supports EWKB format.

Format:

ST_GeomFromWKB (Wkb: String)

ST_GeomFromWKB (Wkb: Binary)

SQL Example

SELECT ST_GeomFromWKB([01 02 00 00 00 02 00 00 00 00 00 00 00 84 D6 00 C0 00 00 00 00 80 B5 D6 BF 00 00 00 60 E1 EF F7 BF 00 00 00 80 07 5D E5 BF])

Output:

LINESTRING (-2.1047439575195312 -0.354827880859375, -1.49606454372406 -0.6676061153411865)

SQL Example

SELECT ST_asEWKT(ST_GeomFromWKB('01010000a0e6100000000000000000f03f000000000000f03f000000000000f03f'))

Output:

SRID=4326;POINT Z(1 1 1)

ST_GeomFromWKT¶

Introduction: Construct a Geometry from WKT. If SRID is not set, it defaults to 0 (unknown).

Format:

ST_GeomFromWKT (Wkt: String)

ST_GeomFromWKT (Wkt: String, srid: Integer)

The optional srid parameter was added in v1.3.1

SQL Example

SELECT ST_GeomFromWKT('POINT(40.7128 -74.0060)')

Output:

POINT(40.7128 -74.006)

ST_GeometryFromText¶

Introduction: Construct a Geometry from WKT. If SRID is not set, it defaults to 0 (unknown). Alias of ST_GeomFromWKT

Format:

ST_GeometryFromText (Wkt: String)

ST_GeometryFromText (Wkt: String, srid: Integer)

SQL Example

SELECT ST_GeometryFromText('POINT(40.7128 -74.0060)')

Output:

POINT(40.7128 -74.006)

ST_LineFromText¶

Introduction: Construct a Line from Wkt text

Format: ST_LineFromText (Wkt: String)

SQL Example

SELECT ST_LineFromText('LINESTRING(1 2,3 4)')

Output:

LINESTRING (1 2, 3 4)

ST_LineFromWKB¶

Introduction: Construct a LineString geometry from WKB string or Binary and an optional SRID. This function also supports EWKB format.

Note

Returns null if geometry is not of type LineString.

Format:

ST_LineFromWKB (Wkb: String)

ST_LineFromWKB (Wkb: Binary)

ST_LineFromWKB (Wkb: String, srid: Integer)

ST_LineFromWKB (Wkb: Binary, srid: Integer)

Example:

SELECT ST_LineFromWKB([01 02 00 00 00 02 00 00 00 00 00 00 00 84 D6 00 C0 00 00 00 00 80 B5 D6 BF 00 00 00 60 E1 EF F7 BF 00 00 00 80 07 5D E5 BF])

Output:

LINESTRING (-2.1047439575195312 -0.354827880859375, -1.49606454372406 -0.6676061153411865)

ST_LineStringFromText¶

Introduction: Construct a LineString from Text, delimited by Delimiter

Format: ST_LineStringFromText (Text: String, Delimiter: Char)

SQL Example

SELECT ST_LineStringFromText('-74.0428197,40.6867969,-74.0421975,40.6921336,-74.0508020,40.6912794', ',')

Output:

LINESTRING (-74.0428197 40.6867969, -74.0421975 40.6921336, -74.050802 40.6912794)

ST_LinestringFromWKB¶

Introduction: Construct a LineString geometry from WKB string or Binary and an optional SRID. This function also supports EWKB format and it is an alias of ST_LineFromWKB.

Note

Returns null if geometry is not of type LineString.

Format:

ST_LinestringFromWKB (Wkb: String)

ST_LinestringFromWKB (Wkb: Binary)

ST_LinestringFromWKB (Wkb: String, srid: Integer)

ST_LinestringFromWKB (Wkb: Binary, srid: Integer)

Example:

SELECT ST_LinestringFromWKB([01 02 00 00 00 02 00 00 00 00 00 00 00 84 D6 00 C0 00 00 00 00 80 B5 D6 BF 00 00 00 60 E1 EF F7 BF 00 00 00 80 07 5D E5 BF])

Output:

LINESTRING (-2.1047439575195312 -0.354827880859375, -1.49606454372406 -0.6676061153411865)

ST_MakeEnvelope¶

Introduction: Construct a Polygon from MinX, MinY, MaxX, MaxY, and an optional SRID.

Format:

ST_MakeEnvelope(MinX: Double, MinY: Double, MaxX: Double, MaxY: Double)

ST_MakeEnvelope(MinX: Double, MinY: Double, MaxX: Double, MaxY: Double, srid: Integer)

SQL Example

SELECT ST_MakeEnvelope(1.234, 2.234, 3.345, 3.345, 4236)

Output:

POLYGON ((1.234 2.234, 1.234 3.345, 3.345 3.345, 3.345 2.234, 1.234 2.234))

ST_MLineFromText¶

Introduction: Construct a MultiLineString from Wkt. If srid is not set, it defaults to 0 (unknown).

Format:

ST_MLineFromText (Wkt: String)

ST_MLineFromText (Wkt: String, srid: Integer)

SQL Example

SELECT ST_MLineFromText('MULTILINESTRING((1 2, 3 4), (4 5, 6 7))')

Output:

MULTILINESTRING ((1 2, 3 4), (4 5, 6 7))

ST_MPointFromText¶

Introduction: Constructs a MultiPoint from the WKT with the given SRID. If SRID is not provided then it defaults to 0. It returns null if the WKT is not a MULTIPOINT.

Format:

ST_MPointFromText (Wkt: String)

ST_MPointFromText (Wkt: String, srid: Integer)

SQL Example:

SELECT ST_MPointFromText('MULTIPOINT ((10 10), (20 20), (30 30))')

Output:

MULTIPOINT ((10 10), (20 20), (30 30))

ST_MPolyFromText¶

Introduction: Construct a MultiPolygon from Wkt. If srid is not set, it defaults to 0 (unknown).

Format:

ST_MPolyFromText (Wkt: String)

ST_MPolyFromText (Wkt: String, srid: Integer)

SQL Example

SELECT ST_MPolyFromText('MULTIPOLYGON(((0 0 1,20 0 1,20 20 1,0 20 1,0 0 1),(5 5 3,5 7 3,7 7 3,7 5 3,5 5 3)))')

Output:

MULTIPOLYGON (((0 0, 20 0, 20 20, 0 20, 0 0), (5 5, 5 7, 7 7, 7 5, 5 5)))

ST_MakePoint¶

Introduction: Creates a 2D, 3D Z or 4D ZM Point geometry. Use ST_MakePointM to make points with XYM coordinates. Z and M values are optional.

Format: ST_MakePoint (X: Double, Y: Double, Z: Double, M: Double)

Example:

SELECT ST_AsText(ST_MakePoint(1.2345, 2.3456));

Output:

POINT (1.2345 2.3456)

Example:

SELECT ST_AsText(ST_MakePoint(1.2345, 2.3456, 3.4567));

Output:

POINT Z (1.2345 2.3456 3.4567)

Example:

SELECT ST_AsText(ST_MakePoint(1.2345, 2.3456, 3.4567, 4));

Output:

POINT ZM (1.2345 2.3456 3.4567 4)

ST_MakePointM¶

Introduction: Creates a point with X, Y, and M coordinate. Use ST_MakePoint to make points with XY, XYZ, or XYZM coordinates.

Format: ST_MakePointM(x: Double, y: Double, m: Double)

Example:

SELECT ST_MakePointM(1, 2, 3)

Output:

Point M(1 2 3)

ST_Point¶

Introduction: Construct a Point from X and Y

Format: ST_Point (X: Double, Y: Double)

In v1.4.0 an optional Z parameter was removed to be more consistent with other spatial SQL implementations. If you are upgrading from an older version of Sedona - please use ST_PointZ to create 3D points.

SQL Example

SELECT ST_Point(double(1.2345), 2.3456)

Output:

POINT (1.2345 2.3456)

ST_PointFromGeoHash¶

Introduction: Generates a Point geometry representing the center of the GeoHash cell defined by the input string. If precision is not specified, the full GeoHash precision is used. Providing a precision value limits the GeoHash characters used to determine the Point coordinates.

Format: ST_PointFromGeoHash(geoHash: String, precision: Integer)

SQL Example

SELECT ST_PointFromGeoHash('s00twy01mt', 4)

Output:

POINT (0.87890625 0.966796875)

ST_PointFromText¶

Introduction: Construct a Point from Text, delimited by Delimiter

Format: ST_PointFromText (Text: String, Delimiter: Char)

SQL Example

SELECT ST_PointFromText('40.7128,-74.0060', ',')

Output:

POINT (40.7128 -74.006)

ST_PointFromWKB¶

Introduction: Construct a Point geometry from WKB string or Binary and an optional SRID. This function also supports EWKB format.

Note

Returns null if geometry is not of type Point.

Format:

ST_PointFromWKB (Wkb: String)

ST_PointFromWKB (Wkb: Binary)

ST_PointFromWKB (Wkb: String, srid: Integer)

ST_PointFromWKB (Wkb: Binary, srid: Integer)

Example:

SELECT ST_PointFromWKB([01 01 00 00 00 00 00 00 00 00 00 24 40 00 00 00 00 00 00 2e 40])

Output:

POINT (10 15)

ST_PointM¶

Introduction: Construct a Point from X, Y and M and an optional srid. If srid is not set, it defaults to 0 (unknown). Must use ST_AsEWKT function to print the Z and M coordinates.

Format:

ST_PointM (X: Double, Y: Double, M: Double)

ST_PointM (X: Double, Y: Double, M: Double, srid: Integer)

Example:

SELECT ST_AsEWKT(ST_PointM(1.2345, 2.3456, 3.4567))

Output:

POINT ZM(1.2345 2.3456 0 3.4567)

ST_PointZ¶

Introduction: Construct a Point from X, Y and Z and an optional srid. If srid is not set, it defaults to 0 (unknown). Must use ST_AsEWKT function to print the Z coordinate.

Format:

ST_PointZ (X: Double, Y: Double, Z: Double)

ST_PointZ (X: Double, Y: Double, Z: Double, srid: Integer)

SQL Example

SELECT ST_AsEWKT(ST_PointZ(1.2345, 2.3456, 3.4567))

Output:

POINT Z(1.2345 2.3456 3.4567)

ST_PointZM¶

Introduction: Construct a Point from X, Y, Z, M and an optional srid. If srid is not set, it defaults to 0 (unknown). Must use ST_AsEWKT function to print the Z and M coordinates.

Format:

ST_PointZM (X: Double, Y: Double, Z: Double, M: Double)

ST_PointZM (X: Double, Y: Double, Z: Double, M: Double, srid: Integer)

SQL Example

SELECT ST_AsEWKT(ST_PointZM(1.2345, 2.3456, 3.4567, 100))

Output:

POINT ZM(1.2345 2.3456 3.4567, 100)

ST_PolygonFromEnvelope¶

Introduction: Construct a Polygon from MinX, MinY, MaxX, MaxY.

Format:

ST_PolygonFromEnvelope (MinX: Double, MinY: Double, MaxX: Double, MaxY: Double)

SQL Example

SELECT ST_PolygonFromEnvelope(double(1.234),double(2.234),double(3.345),double(3.345))

Output:

POLYGON ((1.234 2.234, 1.234 3.345, 3.345 3.345, 3.345 2.234, 1.234 2.234))

ST_PolygonFromText¶

Introduction: Construct a Polygon from Text, delimited by Delimiter. Path must be closed

Format: ST_PolygonFromText (Text: String, Delimiter: Char)

SQL Example

SELECT ST_PolygonFromText('-74.0428197,40.6867969,-74.0421975,40.6921336,-74.0508020,40.6912794,-74.0428197,40.6867969', ',')

Output:

POLYGON ((-74.0428197 40.6867969, -74.0421975 40.6921336, -74.050802 40.6912794, -74.0428197 40.6867969))