The Figure 1 shows RMC's options of a grid layer. These options are summarized in the Table 1.
Figure 1. Grid tab.
Table 1. RMC's options for grid layer.
| Option | Description |
|---|---|
| Properties | Set properties of the selected layer, it describes in detail below |
| Show Properties | Set properties of the selected layer, it describes in detail below |
| Show Labels | Show labels by L or I, J indices of the grid. it describes in detail below |
| Zoom to Layer | Zoom the view to the selected layer |
| Grid Indexing | Show different options for indices of the grid |
| Export To | Export the selected layer to an external file with a different optional format. It describes in detail below |
| Remove | Delete the selected layer |
| Create New Splines Layer | Create a new splines layer in the layer control panel |
| Create New Overlay Layer | Create a new overlay layer in the layer control panel |
| Turn All Layers Off | Show off all existing layers in the layer control panel |
| Turn All Layers On | Show on all existing layers in the layer control panel |
Properties
Figure 2. Grid Layer Properties: General.
Figure 3. Grid Layer Properties: Labels.
Show Properties
Figure 3. Show Properties.
Table 2. Show Properties.
| Option | Description |
|---|---|
| None | Only the grid is displayed |
| Orthogonal Deviation | Show the orthogonal deviation of the grid. it is displayed by color ramp. (Figure 4) |
| Cell Aspect Ratio | Show the cell aspect ratio of the grid. it is displayed by color ramp. (Figure 5) |
| Cell Area | Show the area of the grid cells. it is displayed by color ramp. (Figure 6) |
| Cell DX | Show the dimension DX of the grid cells. it is displayed by color ramp. (Figure 7) |
| Cell DY | Show the dimension DY of the grid cells. it is displayed by color ramp. (Figure 8) |
Figure 4. Show Properties: Orthogonal Deviation.
Figure 5. Show Properties: Cell Aspect Ratio.
Figure 6. Show Properties: Cell Area.
Figure 7. Show Properties: Cell DX.
Figure 8. Show Properties: Cell DY.
Show Labels
Table 3. Show Labels for grid layer.
| Option | Description |
|---|---|
| None | Only the grid is displayed |
| Cell L Index | Show the L index number of the grid cells, each cell has only a L index. (Figure 9) |
| Cell I,J Indices | Show the I and J indices number of the grid cells, each cell has a pair of I and J indices. (Figure 10). This option sometimes is helpful when we create the next grid to merge with the previous grid as we want to know the number of cells along a segment of the previous grid. |
| Node I,J Indices | Show the I and J indices number of the grid nodes, each grid node has a pair of I and J indices. (Figure 11) |
Figure 9. Show Labels: Cell L Index.
Figure 10. Show Labels: Cell I,J Indices.
Figure 11. Show Labels: Node I,J Indices.
Grid Indexing
When a grid is generated each cell or node has an I and J coordinate. Sometimes these are not in the direction that the user requires. The Grid Indexing tool allows the user to reverse the I and J coordinates either separately, or at the same time.
To display the I, J labels of the grid, select the grid layer in the Layer Control then RMC. Select Show Labels (e.g Cell IJ Indices) as shown in Figure 10.
Grid Indexing includes options that are summarized in Table 4:
Table 4. Grid Indexing
| Option | Description |
|---|---|
| Transpose I - J Indices | Reverses both the I and J indices of the selected grid at the same time. |
| Flip I Indices | Reverses only the I indices of the selected grid. |
| Flip J Indices | Reverses only the I indices of the selected grid. |
| Rotate Indices Clockwise | Orders the indices in a clockwise direction. |
| Rotate Indices Counter-Clockwise | It is the opposite of the Rotate Indices Clockwise. |
Export To
The Export To option allows saving the grid to a file with different file formats as shown in Figure 12. These options are summarized in Table 5. The function of these options is similar to the Export button described in Main toolbar buttons.
Figure 12. Export grid layer options.
Table 5. Export Grid to a file.
| Option | Description |
|---|---|
| Export To Grid+ | Export the selected grid layer to the native grid file of Grid+ (*.cvl) |
| Export To RGF Grid | Export the selected grid layer to the native grid file of the Delft3D (*.grd) |
| Export To EFDC Grid | Export the selected grid layer to the EFDC input file (including corners.inp, dxdy.inp, lxly.inp), these files can open with EEMS. |
| Export To Shapefile | Export the selected grid layer to the shapefile which can open with ArcGIS, QGIS, Global Mapper, etc. |
| Export To KML | Export the selected grid layer to the KML file which can open with Google Earth, Global Mapper, etc. |
| Export To Outline | Export outline of the selected grid layer to a text file (*.p2d). |