Transformations¶

SQL/MM	Lua
`ST.Transform()`	`Geometry.transform()`

Geometry.transform(tosrid)¶

Parameters:	tosrid (uint32) – Spatial Reference System Identifier
Returns:	a new geometry
Return type:	Geometry

Returns a new geometry with its coordinates transformed to the SRID.

SRID must be defined in box.space.spatial_ref_sys. Geometry.transform() uses PROJ.4 library for conversion.

tarantool> point = gis.Point({37.17284, 55.74495}, 4326)
---
...

tarantool> point:transform(4328) -- GeoCentered
---
- POINT Z (2867223.87796052 2174199.925113969 5248510.410253408)
...

tarantool> point:transform(32644) -- UTM
---
- POINT (-2129579.994461996 7080150.495815906)
...

tarantool> gis.LineString({{37.279357, 55.849493}, {37.275152, 55.865005}}, 4326):transform(4328)
---
- LINESTRING Z (2855517.134262041 2173695.700583999 5255053.314718033, 2854539.218976094
  2172620.409320028 5256022.657867197)
...

tarantool> box.space.spatial_ref_sys:get(4326)[5]
---
- '+proj=longlat +datum=WGS84 +no_defs '
...

ST.Transform(geometry, tosrid)¶: This function is a SQL/MM-compatible alias for Geometry.transform(). SQL-MM 3: 5.1.6.