iPOGO V5 Users Group - Help Manual

*Methodology*
Command:	6
Alpha Alias:	Inverse Pairs
Description:	Prints the inverse bearing between two points or a curve
Data Format:	6,LineID From {RadiusPt} To {[From {RadiusPt} To] ... } ;
Problem:	Given points 2, 3, 6 and 8 and radius point 7. Print inverse bearings and distances between points 3 and 6, 6 and 8, 8 and 2, and 2 and 3. Print a curve table for the curve with radius point at 7.
Solution:	6,25 6 7.1 8 8 2 2 3 ;

Data Description

Command	6	Prints the inverse bearings in sequence. Prints curve data appended to the inverse of the chord. Assigns a number which is used to identify a line or curve. This command requires either two or three point numbers depending on whether you want the inverse bearing between two points or curve information between two points. If you want to print inverse bearings for a curve, you must enter three points as the Point of Curvature (PC), radius point (RP) with a .1 appended, and Point of Tangency (PT) in sequence. The radius point must be equidistant from the PC and PT or an error message will display.
LineID	25	Enter any integer which will be used as the object number for the line or curve. For example, 6,25 will print the inverse bearings for the points provided and identify the line or curve as 25. Beginning with Version 5, the LineID may be an alpha-numeric word such as 123a or CL_3rd_Street.
From	6	The first point number for a tangent or the PC of a curve.
{RadiusPt}	7.1	Radius point number if you are defining a curve. Append .1 to this number to indicate it as the radius point. Enter this value as a negative number if the curve has a delta angle greater than 180 degrees (i.e., a culdesac).
To	8	The end point of a tangent or the PT of a curve.
{[From {RadiusPt} To] ... }	8 2	This is the repeating feature of the 6,n command. You may enter the points for more than one line or curve. All features will have the same object number.
End Command	;	All commands end with a semi-colon.

Example Command File

$ Example data set for the 6 (Inverse Pairs) command

$ Set the points
  0 2 0 0 ;
  1 3 2 -4 32 46 20  53.67  ;
  1 6 3 -1 74 21 30 115.37  ;
  1 8 2 -2 77 23 17  86.653 ;
  5 7 6 8 3 159 159 ;
        
$ Setup feature codes with 
$  cmd  feature, layer, color, style, thickness
  15.1    L1     LINES1   1      1       1 ;

$ Turn plot on
  91 ;

$ Activate the L1 feature
  15 L1 ;
          $ draw the lines
            6 25
                6 7.1 8 
                8 2 
                2 3 
                3 6 ;

Help for this command was last updated: 08/07/2001 6:44:25 PM

iPOGO V5 Help Manual On-Line

Group:Command:

7) Inverse6 or Inverse Pairs

Group:
Command:

7) Inverse
6 or Inverse Pairs