Use the Inverse command to display the inverse information which includes the length, course, perimeter, area, closure error, and precision information for a given figure.
Closure, perimeter, precision, and area values are calculated using the exact XY coordinate data of each figure vertex.
Notes on Inverse Information
The Inverse report starts at the beginning of the figure. For each segment, the inverse report lists the direction and distance, or curve data computed from the XY coordinates of the endpoints of the figure segments. The area is calculated from the XY coordinates of each segment.
Tutorial Exercise: Viewing Inverse and Mapcheck Information
To display Inverse (exact closure) information using Toolspace
- In Toolspace, on the Survey tab, click the Figures collection. In the list view, right-click a figure
Display Inverse. The Figure Display vista is displayed with the Inverse information for the selected figure. Note:Figures that have vertices created using Point names will display the point name in the Point column.
To calculate the mathematical closure of a figure using the Survey Command Window
- In Toolspace, on the Survey tab, right-click a named network Survey Command Window.
- At the Command line, enter:
INVERSE FIGURE [figure]
Command Line Example
The following is a typical report generated by the Mapcheck command:
Figure Name: WALL
North: 5000.000 East: 5000.000
Line Length: 431.47 Course: 355-00-19
North: 5429.830 East: 4962.435
Line Length: 265.59 Course: 43-52-25
Line Length: 609.71 Course: 93-31-48
North: 5583.743 East: 5755.061
Line Length: 954.40 Course: 232-17-32
North: 5000.000 East: 5000.000
Perimeter: 2261.16
Area: 234948.16 5.39 acres
Mathematical Closure - (Uses Survey Units)
Error Closure: 0.000 Course: 0-00-00
Error Closure: 0.000 Course: 0-00-00
Precision 1: 2261164601.60