# 6.6 Redefined Geometry Representations

Topic Version | 1 | Published | 09/11/2015 | |

For Standard | RESQML v2.0.1 |

RESQML provides us with the ability to modify the geometry of a representation. However, because geometry is central to the definition of a representation, we can only do this by creating a new representation based upon the existing representation. This capability supports a number of very useful cases:

- Time dependent geometry for structures that evolve in time (geomechanics, basin evolution)
- Related representations with one in depth and one in time
- Related representations with one in one coordinate reference system and one in another

Figure 6.6-1 shows the construction. Any representation with geometry may be selected as the supporting representation. The use of a “patch of geometry” construction allows grids with additional grid geometry to have all patches of their grid geometry redefined.