User:Jcreer/SMS:Compute Volumes Workflow

Computing volumes with SMS

Required:

• Geometry - 2D Mesh or Scatterset
• Delta dataset on the geometry of the spatially varied elevation.
  • This can be computed in the dataset toolbox
  • Examples include:
    • Delta bed dataset computed by a sediment transport model
    • Delta water surface elevation computed from two different water surface values
• Polygon of region to be evaluated
  • Can be defined interactively but recommendation is to define it in a map coverage

Setup steps:

1. Load the geometry
2. Load the datasets
3. Select the desired "delta" dataset
4. Load or define the polygon for with delta volume is desired
5. In "File|Info option.." make sure "Volume" is turned on. (You may want to unselect quantities that are not of interest to simplify the message.)

Operation steps:

1. Switch to the "Map" module
2. Select the polygon (or polygons) that cover the region you want to compute the volume for
3. Use "Select/Delete Data..." command in the "Feature Objects" menu. Dialog appears.
4. Leave the "Data Domain" setting as "Inside polygon(s)"
5. Select the geometry in the tree on the lower right side.
6. Select "Mesh|Elements" if the geometry is a mesh or "Scatter|Triangles" if the geometry is a scatter set.
7. Select "OK" - SMS will switch the module to the geometry module and select the elements/cell or triangles inside the polygon(s)

Results

The volume will be reported at the bottom of the graphics window in the status bar.

The other info options allow for this to be saved to a file or displayed in a separate window.