You can determine the station and offset distance of an existing point, or group of points, from an existing baseline with the Inverse Point command.
BL INV [point 1] (point 2)
NE 1 1000 1000
STN 1
ZD 2 90 400
BL IS 1 2 100
BL PT 3 220 50
BL PT 4 270 -50
BL INV 1 4
This station and offset of points 1, 2, 3, and 4 are listed:
! Point Station Offset Elevation. Northing Easting
! 1 100.00 0.00 <Null> 1000.00 1000.00
! 2 500.00 0.00 <Null> 1000.00 1400.00
! 3 220.00 50.00 <Null> 950.00 1120.00
! 4 270.00 -50.00 <Null> 1050.00 1170.00
BL INV [point 1] (point 2)
Parameter | Definition |
---|---|
point 1 | An existing point in the drawing. It does not need to be adjacent to the baseline since the baseline is infinite in length. |
point 2 | Used with point 1 to specify a range of points that you want to list. If you do not specify point 2, then only point 1 is listed. |