In GeoHECRAS, the Edit 2D Roughness Regions command allows the user to edit Manning’s roughness regions, such as for channel areas, where the Manning’s roughness data override the land cover data used for 2D flow areas.
Follow the steps below to use the Edit 2D Roughness Regions command:
- From the Input ribbon menu, click the Manning’s Roughness dropdown menu and select the Edit 2D Roughness Regions command.
- The Edit 2D Roughness Regions dialog box will be displayed.
- Click on the [Pick] button to select a 2D roughness region from the Map View.
- The Edit 2D Roughness Regions dialog box will temporarily disappear, and a prompt will be displayed on the status bar directing the user on what to do next. The user can then select a 2D roughness region on the Map View.
- After selecting a 2D roughness region from the Map View, the dialog box will be redisplayed. The selected 2D roughness region will be displayed in the Region name dropdown entry.
- Alternatively, the 2D roughness regions available in the project can be directly selected from the Region name dropdown entry.
Note: The up and down arrow buttons next to the dropdown entry allow the user to switch between the available 2D roughness regions. - The edit option (Pencil icon) next to the Region name dropdown entry allows the user to edit the name of the selected 2D roughness region.
- The Fill Color color palette allows the user to select the color fill of the 2D roughness region to be displayed on the Map View.
