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Expand1. Review elevation data for errors.
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Expand1. Use the Dataset Info dialog.
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- Find the "Z", "elevation" or "depth" datasets on the geometric object (mesh, TIN, grid, raster) that is being reviewed
- Right-click on elevation data and select Info.
- Review information in the Dataset Info dialog to see that the range of values are as expected.
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Expand2. Use contour display options.
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- Turn off Points and Triangles, then turn on Contours in the Scatter tab of the Display Options dialog.
- Set contour options in the Contours tab. The "Color Fill" option is recommended for this.
- Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist).
- Verify that the region being modeled is covered by the elevation/depth data and there are no holes.
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Expand3. Rotate the elevation data.
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- Use the Rotate
tool to examine the elevation data from different angles.
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Expand2. Remove erroneous points and triangles.
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- After reviewing the imported data, points or triangles covering regions where there are no data points should be deleted. This could include outlier points or thin triangles.
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Expand3. Add breaklines.
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- Select the Create Breakline
tool.
- Click along points of a common elevation, such as at a bank toe or levee crest, to connect these points in the surface.
- Use the Backspace key to back up if an erroneous selection is made.
- Double-click or press Enter key to complete the breakline.
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