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| DEMs can be interpolated to TIN elevation or to a 2D finite difference grid.
| | #redirect [[WMS:DEM Menu#Interpolate]] |
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| ==Interpolation to TIN Elevations==
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| The '''Interpolate to TIN''' command of the ''DEM'' menu is used to interpolate the elevations of the DEM to an existing TIN. If TIN vertices lie outside the bounds of the active region of the DEM, no interpolation is performed. This interpolation is done automatically when creating a TIN from feature objects and a DEM is used for a background elevation map. If trying to create a TIN from a very large DEM (large number of DEM points), it may be advantageous to create the TIN first and then interpolate elevations from the DEM in a piece-wise fashion by dividing the DEM into several smaller regions and interpolating to the TIN one at a time.
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| ==Interpolation to 2D Grids==
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| Elevations from the DEM can be interpolated to a 2D finite difference grid used for GSSHA models. This is accomplished using the '''Interpolate to 2D Grid''' command of the ''DEM'' menu. The DEM values will appear as a dataset under the 2D grid item in the Project Explorer.
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| ==Related Topics==
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| * [[WMS:Creating TINs|Creating TINs from Feature Objects]]
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| * [[WMS:Feature Objects Menu#Create Grid|Creating 2-D Grids]]
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| {{WMSMain}}
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| [[Category:DEM|I]]
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| {{stub}}
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