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
Table 4. Grid Indexing
| Option | Description |
|---|---|
| Transpose I - J Indices | The I and J indices of each cell are switched. |
| Flip I Indices | Only I indices are modified while J indices are unchanged. |
| Flip J Indices | Only J indices are modified while I indices are unchanged. |
| Rotate Indices Clockwise | The cell indices are moved along clockwise. |
| Rotate Indices Counter-Clockwise | The cell indices are moved along counter- clockwise. |
When a grid is generated each node has an I and J coordinate. This tool allows the user to reverse the I and J coordinates either separately, or at the same time using Transpose.
Export To
The grid cells can be exported to several file format as shown in Figure 7.
| Option | Description |
|---|---|
| Export To Grid+ | The file of the grid cell will has format *cvl |
| Export To RGF Grid | The file of the grid cell will has format *RGF |
| Export To EFDC Grid | The file of the grid cell will has format *inp, which can import directly to EEMS model |
| Export To Shapefile | The file of the grid cell will has format *shp |
| Export To KML | The file of the grid cell will has format *kml |
| Export To Outline | The file of the grid cell will has format *p2d |
Figure 7. Export the grid cell