This command reports the bearing/azimuth and horizontal distance between two points. The command prompts for a series of points. Use the appropriate object snap mode to select the points from the screen, or use the point numbers to reference coordinates stored in the current coordinate (.CRD) file. The results are then displayed. This command is also used in conjunction with the Traverse and Sideshot commands to occupy and backsight two points. The last two points you Inverse to are the Backsight and the Occupied point for the Traverse and Sideshot commands. An attractive feature of Inverse is that you can enter T or SS within the command and go directly to Traverse or Sideshot. Even a single S will transmit to Sideshot. Hotkeys are not case sensitive. Press [Enter] at the point prompt to end the command.
You can also inverse around an arc by inversing to the PC, and then entering an A for Arc option. The program will ask for the radius point, the curve direction left or right and the PT point. The curve data is then reported. There is an unequal PC-Radius and PT-Radius distance check. The tolerance for this is set in the Area Label Defaults command.
There are several input options for Inverse that are set by entering O for Options on the command line. Sideshot inverse holds the current occupied point and calculates the bearing/distance to each entered point. The Pairs option reports the bearing/distance between pairs of points and not for every entered point. For example, if points 1,2,11,12 were entered, the bearing/distance would be reported for 1,2 and 11,12 but not 2,11. The Auto Increment option uses the next point number by just pressing Enter. To exit the routine with Auto Increment active, End must be entered.
There are also several angle output options that are set at the second prompt in Options. The angle can be reported as either Bearing, Azimuth, Gon or Angle Right. You can also specify to report with decimal seconds. For instruction on how to insert either new or existing points into the drawing, see Draw-Locate Points in the Points Commands section of the General Commands chapter. This feature can be found in the Points pulldown of all menus.
Calculate Bearing & Distance from starting point?
Traverse/SideShot/Options/Arc/Pick point or point number: pick
a
point
Traverse/SideShot/Options/Arc/Pick point or point number:
9
PtNo. Northing(Y) Easting(X) Elev(Z) Description
9 4909.25 4648.37 0.00
Bearing: N 81d8'54" E Azimuth: 81d8'54"
Horizontal Distance: 261.17407461
Pulldown Menu Location: COGO
Keyboard Commands: inverse, i
Prerequisite: None
File Name: \lsp\brgdist.lsp