PostGIS 1.5.8 Manual - Fedora Project Packages GIT repositories

PostGIS 1.5.8 Manual185 / 310Synopsisfloat ST_Distance_Spheroid(geometry geomlonlatA, geometry geomlonlatB, spheroid measurement_spheroid);DescriptionReturns minimum distance in meters between two lon/lat geometries given a particular spheroid. See the explanation of spheroidsgiven for ST_Length_Spheroid. PostGIS version prior to 1.5 only support points.NoteThis function currently does not look at the SRID of a geometry and will always assume its represented in the coordinatesof the passed in spheroid. Prior versions of this function only support points.Availability: 1.5 - support for other geometry types besides points was introduced. Prior versions only work with points.ExamplesSELECT round(CAST(ST_Distance_Spheroid(ST_Centroid(the_geom), ST_GeomFromText(’POINT(-118 38)’,4326), ’ ←↪SPHEROID["WGS 84",6378137,298.257223563]’)As numeric),2) As dist_meters_spheroid,round(CAST(ST_Distance_Sphere(ST_Centroid(the_geom), ST_GeomFromText(’POINT(-118 38) ←↪’,4326)) As numeric),2) As dist_meters_sphere,round(CAST(ST_Distance(ST_Transform(ST_Centroid(the_geom),32611),ST_Transform(ST_GeomFromText(’POINT(-118 38)’, 4326),32611)) As numeric),2) As ←↪dist_utm11_metersFROM(SELECT ST_GeomFromText(’LINESTRING(-118.584 38.374,-118.583 38.5)’, 4326) As the_geom) ←↪as foo;dist_meters_spheroid | dist_meters_sphere | dist_utm11_meters----------------------+--------------------+-------------------70454.92 | 70424.47 | 70438.00See AlsoST_Distance, ST_Distance_Sphere7.8.17 ST_DFullyWithinST_DFullyWithin — Returns true if all of the geometries are within the specified distance of one anotherSynopsisboolean ST_DFullyWithin(geometry g1, geometry g2, double precision distance);