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Line 9: <li> When one domain is nested within another, remember to deactivate the active cells in the parent domain (mesh) where the domains overlap. This is done in the parent domain TGC file.<br> The <font color="blue"><tt>INVERT </tt></font> option can be used with <font color="blue"><tt>Read GIS CODE</tt></font> or <font color="blue"><tt>Read GIS Code BC</tt></font> to deactivate the active cells using the same GIS polygon that is used to define the active cells in the child domain. If <font color="blue"><tt>INVERT </tt></font> is specified (eg. <font color="blue"><tt>Read GIS ~~Code Invert~~CODE</tt></font> or <font color="blue"><tt>Read GIS Code BC ~~Invert~~</tt></font>), the active/inactive status of any Code polygon is reversed (i.e. a Code of 1 becomes 0, and a Code of -1 or 0 becomes 1). This means that the same layer can be used by both TGC files when linking 2D domains.<br> Correct deactivation of active cells in areas of overlap can be reviewed via the [[TUFLOW_Check_Files \| grd_check file]], shown below.<br>

TUFLOW 2D2D BC Advice: Difference between revisions