Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Excerpt
hiddentrue

geoBuffer( "Well Known Text", Geometry value, Double distance), Computes a buffer area around left geometry using the given distance.

Function: geoBuffer(Geometry value, Double distance, Integer decimalPlaces, Integer quadrantSegments

Computes a buffer area around left geometry using the given distance

If passed a string the geometry functions will automatically convert it into a geometry object.

Syntax

geoBuffer( geometryValueLeftgeometryValue, Distance,  decimalPlaces, quadrantSegments )

ArgumentTypeDescription
geometryValueLeft
geometryValue

WTK String or

Geometry Object

The geometry the calculation is formed around provided in either data type.

DistanceFloatThe size of the buffer area to be used.
decimalPlacesIntegerThe number of decimal places to use in the geometry calculations. Defaults to 0 if not provided. Can also take negative values e.g. -1 uses geometry to the nearest 10.
quadrantSegmentsIntegerThe number of line segments used to represent the quadrant of a circle where the buffer boundary contains circular arcs. Defaults to 8 if not provided.

Examples

geoBuffer("POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10))", 10)

Returns a geometry Geometry of the buffer area.


See Also