1. Import rasters.
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- Raster data is imported into the GIS module in SMS.
- Use the Open command to import raster data files such as DEMs, KMZ files, and gridded elevation formats.
- Files can also be imported with the "drag and drop" option.
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4. Import Online Data.
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Possibly include entire workflow??
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2. Interpolate raster elevation to mesh to create new elevation dataset.
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- The Interpolate Priority Rasters tool allows for multiple rasters to be used when interpolating onto a mesh. To do so, follow these steps:
1. Use the Interpolate Priority Rasters tool to interpolate raster data onto the desired mesh.
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- From the Toolbox, select Interpolate Priority Rasters
- Select the mesh to interpolate onto.
- Select the order of priority for the rasters that will be used for interpolation. The order determines which raster the program will look at first to interpolate data onto the mesh.
- Run the Interpolate Priority Rasters tool.
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2. Review the data on the mesh.
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- Turn off all rasters.
- Turn on the desired mesh.
- Adjust the Display Options .
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3. Set the map elevation dataset to the newly created dataset.
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- While in the Mesh module, use the Data|Map elevation... command.
- Select the newly created dataset.
- Adjust the display as desired to review the change in mapped dataset.
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Discarded workflow components
Set unassigned node values.
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- Depending on the rasters used, it's possible that some mesh nodes didn't get assigned elevation values. To assign them values, follow these steps:
- Right-click on the mesh in the Project Explorer and use the Mesh → 2D Scatter command.
- Select all desired scatter points. ??Include more information on how to do this?
- Delete the selected scatter points and use the Triangles|Triangulate command.
- After switching to the Mesh module, select all nodes with unassigned values in the grid.
- In the Graphics Window, use the Interpolate elevation right-click command.
- Set the Scatter Set To Interpolate From to the scatter set where the unassigned scatter points have just been removed and interpolate it to this scatter set.
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Blend Raster Resolution.
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- Interpolating data from multiple elevation sources first requires blending the rasters involved. To do so, follow these steps:
- From the Toolbox, select Blend Raster to Edges.
- Set the Primary raster and the Secondary raster options with the rasters that are to be blended.
- Specify the distance over which the active edges of the primary raster will be blended into the secondary raster.
- Specify the name of the Output raster. This will be a separate raster created from the primary and secondary raster.
- Run the Blend Raster to Edges tool.
- Examine the newly created raster.
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Clip rasters (optional??).
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- Trimming rasters ensures that no part of the raster is above surveyed elevations. To do so, follow these steps:
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