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Compute Area By Points
To calculate the area of a polygon with known vertices.
- In the Input tab:
- From the
drop-down list select an object type to specify an area to be computed:
- Point List - enter an existing point list name manually or select it from the list
. Points of the selected point list will be listed along with their codes in the table and the polygon will be shown in the plot.
- Use
/
to hide / show the plot as required.
- Click
to view information about a highlighted point in the Selected Point dialog.
- Click
/
to change position of highlighted point(s) in the list. The plot will show how the area layout changes.
- Linework - enter an existing linework name manually or select it from the map
or from the list
. Points of the selected linework will be listed along with their codes in the table and the linework will be shown in the plot. The start and end point of the non-closed linework form an edge of the closed polygon to compute its area.
- Use
/
to hide / show the plot as required.
- Click
to view information about a highlighted point in the Selected Point dialog.
- Area - enter an existing area name manually or select it from the map
or from the list
. Points of the selected area will be listed along with their codes in the table and the polygon will be shown in the plot.
- Use
/
to hide / show the plot as required.
- Click
to view information about a highlighted point in the Selected Point dialog.
- Points - select points to form an area to compute. Select them from the map
or from the list
. Points will be listed along with their codes in the table and the polygon will be shown in the plot.
- Use
/
to hide / show the plot as required.
- Click
to view information about a highlighted point in the Selected Point dialog.
- Click
/
to change position of highlighted point(s) in the list. The plot will show how the area layout changes.
- Click the Calc
button to calculate the area of the polygon.
Note: A warning displays if the area layout has self-intersections, and the computation is impossible. Review the plot to avoid such self-intesections.
- In the Results tab, review the results of the calculation and click
to save the data to a txt file if required:
- The calculated 2D area in sq. JobUnits, acres and hectares.
- 2D Perimeter of the polygon.
- The tolerance interval calculated as Area (in meters) minus / plus Perimeter multiplied by 1.25
- The calculated 3D area in sq. JobUnits, acres and hectares.
- 3D Perimeter of the polygon.
- The list of points constituting the polygon vertices in the correct order.
- The Map tab shows the job's objects with the illustration for the results and supports generation of a field report with the results of calculation (use the Create Field Report command from the context menu).
- The Drawing tab shows the illustration for the results and supports generation of a field report with the results of calculation (use the Create Field Report command from the context menu).
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