This command calculates the area of a closed figure that is defined internally by user-entered point numbers or by a polyline picked from the Map Screen.
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- Add Pts: Use this button to add cited points to create the figure.
Note: If you want to add a range of points, you can enter in the points in the following format:
3-10,2,20-15
This would add the points from 3-10 sequentially, then point 2, then 20-15 sequentially. Additional controls permit the point to be specified from the Point List or a Map Screen pick.
- Delete: Use this button to remove selected points from the figure.
Note: If the last point of the figure is not the same as the first point of the figure, a straight segment from the last point will be used to close the geometry back to the first point.
After clicking ✅, a temporary polyline is drawn and the area is reported at the bottom of the Map Screen.
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Polyline Areas
Polyline geometry can be produced by several methods, including (but not necessarily limited to):
- Point descriptions with feature codes (which can be updated via the Map Screen -- Tools -- Field-to-Finish routine).
- Manually drawing the polyline(s) via the Map Screen -- Draw -- Polyline commands.
- Importing drawings (DWG) or data exchange files (DXF), etc via the Map Screen -- File -- .DXF/.DWG/.DGN Import commands.
- Importing the Carlson polyline (PLN) file type (and others) via the Map Screen -- File -- Utilities commands.
Note: The polyline method allows selection of figures with arcs.
When the polyline method is used to solve the area, the program will bring up the Map Screen where you pick a polyline:
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Note: You can use the direction icon in the lower right of the screen to confirm or change the direction of the polyline.
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At the end of each area calculation, you are asked if you would like to Write result to raw file? Responding Yes will write the area results in the Raw File.