11.8 Local, Child and Parent Grids

Any RESQML grid may be a child of another grid. Specifically, a grid may inherit its geometry, topology and/or properties from a parent grid (Figure 11.8.1-1). A grid with explicit geometry may also be a child grid, for example, to support inheritance of properties while providing more spatial resolution of the reservoir grid geometry than was present in the parent representation. The “regrid” data object, described below, is used to specify the parent-child grid relationship. If both geometry and regrid information are provided by the writer, then the geometry must be considered more relevant than the regrid information.