3D data types exist in a three-dimensional coordinate space. The third coordinate can be either:

The Z and M values are not considered in all geometric calculations or in the generation of some new geometry values. M values are considered when using LRS functions. Each function description indicates whether it supports Z values.

To convert WKT or WKB to an Ingres geometry you have to use the appropriate SQL function. For geometries with a Z coordinate use GeomZFromText and GeomZFromWKB. For geometries with an M coordinate use GeomMFromText and GeomMFromWKB.

3D types include: