iPOGO V5 Users Group - Help Manual

*Methodology*
Command:	17
Alpha Alias:	Round Bearings
Description:	Recomputes points by rounding off inverse bearings
Data Format:	17 Rounding-Interval From To {[To] ..} ;
Problem:	Given lines defined by points 21, 22, 23 and 24. Round the bearings of each line and recompute coordinates for points 22, 23 and 24.
Solution:	17 600 21 22 23 24 ;

Data Description

Command	17	Rounds an inverse bearing to a specified interval and computes new coordinates for a previously computed point along that inverse.
Rounding- Interval	600	Rounding value, entered in seconds, used to round off the defined bearings. Example: Enter 60 to round each bearing to the nearest minute. Enter 600 to round the bearings to the nearest ten minutes.
From	21	Previously computed point number that defines the beginning of the inverse bearing.
To	22	Point number to be recomputed by rounding the original inverse bearing to the specified interval. Note: The following describes the internal computation procedures. Coordinates of the first point in the sequence are held. A new second point is recomputed at the rounded bearing and holding the first distance. A new second bearing and distance is inversed from the recomputed second point to the third point. The third point is recomputed at the new rounded bearing and new second distance. and so forth to the last point.
{[To] ..}	23 24	Repeating feature of this command which allows you to define more inverse bearings to be rounded off. Continue entering points to be recomputed. Each point becomes the starting point of the inverse to the next point entered.
End Command	;	All commands end with a semi-colon.

Example Command File

$ Example File for the 17 
$   (ROUND BEARINGS) command

$ set initial points
  0
    21 5000 5000
    22 5105 5100
    23 5007 5214
    24 5116 5304
  ;

  100 Original bearings ;
      7 1 21 -24 ;

$ round bearings to 10 minutes and recompute 
$    points with the 17 command
  17 600 21 22 23 24 ;


$ Setup feature codes with the 15.1 command
$  cmd  feature, layer, color, style, thickness 
   15.1  PL      PL         3      1       1 ; 

$ Turn plot on
  91 ;

$ Activate the PL feature code with the 15 command
  15 PL ;
     100 Rounded bearings ;
         7,1 21 -24 ;

Help for this command was last updated: 06/28/2000 12:01:01 AM

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Group:Command:

17) Corner Utilities17 or Round Bearings

Group:
Command:

17) Corner Utilities
17 or Round Bearings