As the data for an MT3DMS model are being entered, it is useful to display symbols and contours on the grid representing boundary conditions and parameter values. This visual feedback helps to ensure that the data have been entered correctly. The display options unique to MT3DMS are provided in the MT3D Display Options dialog. This dialog is accessed through the Display Options command in the MT3D menu. This command brings up the MT3D tab of the 3D Grid Display Options dialog. The options in the dialog are as follows:
The two items at the top of the dialog represent display options for both the constant concentration cells and the point sources/sinks. If the check box just to the left of one of these is selected, a symbol is displayed at the center of each cell where that object has been defined. The symbol for each object is displayed in a window to the left of the check box. The symbol can be changed by clicking in the window. This brings up the Symbol Editor dialog. The Symbol Editor contains a list of available symbols and can be used to edit the size and color of the symbol.
MODFLOW uses the IBOUND array and MT3DMS uses the ICBUND array to distinguish active and inactive cells. These two arrays are usually similar but may not be identical. When a MODFLOW simulation is in memory, but an MT3DMS simulation is not, the IBOUND array is used to control the display of the cells (inactive cells are normally hidden). When both MODFLOW and MT3DMS are in memory, the ICBUND takes precedence and is used for display.
Related Links:
3D Grid Display Options