View source for SMS:Compute Volumes Workflow

SMS has the ability to compute volumes from spatially varied elevation. Certain datasets and project features are required in order to complete this process.
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!style="text-align:left;"|Required data and project features.
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:*Geometry &ndash; 2D mesh, UGrid, or scatter set.
:*Delta dataset on the geometry of the spatially varied elevation.
:**This can be computed in the [[SMS:Dataset Toolbox|''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 defining it in a map coverage is recommended.
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To compute volumes in SMS, use the following steps:
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!style="text-align:left;"|1. Load data files.
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<blockquote>
{{SMS Import Data Workflow}}
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!style="text-align:left;"|2.  Select the desired "delta" dataset
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:: The delta dataset with the spatially varied elevation needs to be active to calculate volumes. The dataset can be on of the following:
::* 2D Mesh
::* 2D Scatter set
::* UGrid
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!style="text-align:left;"|3. Load or define the polygon for the delta volume area.
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: A polygon on an [[SMS:Coverages|map coverage]] is needed to compute volumes.
<blockquote>
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!style="text-align:left;"|1. Use an existing map coverage or create a new map coverage.
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<blockquote>
{{SMS new coverage workflow}}
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!style="text-align:left;"|2. Import a polygon for the delta volume.
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:If there is a file with with the define polygon available, use this option.
:# Use the [[SMS:File Menu|''File'' | '''Open''']] menu command to open a file containing a polygon.
:# Depending on the file type, the polygon may need to be converted to a map coverage.
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!style="text-align:left;"|3. Define the polygon for the delta volume.
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:Use this option if a new polygon needs to be defined.
<blockquote>
{{SMS Create Polygons Workflow}}
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</blockquote>
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!style="text-align:left;"|4. Make certain the ''Volume'' option is on.
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:# Select the [[SMS:File Menu|''File'' | '''Info option...''']] menu command. 
:# In the [[SMS:File Menu#Info|''Selection Information'']] dialog, make certain ''Volume'' is turned on.
:#* If desired, unselect quantities that are not of interest.
:#* If wanting to create a file with computed volume, turn on the ''Echo to File'' option.
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!style="text-align:left;"|5. Compute volume in the [[SMS:Select/Delete Data...|''Select/Delete Data'']] dialog.
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:# Using the [[SMS:Map_Module_Tools|'''Select Polygons''']] [[File:SMS Select Polygon Tool.svg|16 px]] tool, select the polygon(s) that covers the computation region.
:# Use [[SMS:Map_Feature_Objects_Menu#General_Commands|'''Select/Delete Data...''']] command in the [[SMS:Map_Feature_Objects_Menu#General_Commands|''Feature Objects'']] menu. 
:# Compute volume in the [[SMS:Select/Delete Data...|''Select/Delete Data'']] dialog.
::# Leave the ''Data Domain'' setting as "Inside polygon(s)"
::# Select the geometry in the tree on the lower right side then select 
::#*"Elements" if the geometry is a mesh 
::#*"Triangles" if the geometry is a scatter set
::#*"Cells" if the geometry is a UGrid
::SMS will switch the module to the geometry module and select the elements, cells, or triangles inside the polygon(s)
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!style="text-align:left;"|6. View results.
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:# The volume will be reported in the [[SMS:Help or Status Window|Status Bar]] at the bottom of the Graphics Window.
:# The ''Echo to File'' option in the [[SMS:File_Menu#info|''Selection Information'']] dialog allows for the results to be saved to a file or displayed in a separate window.

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[[Category:SMS Workflows]]
[[Category:General Workflows]]