iPOGO V5 Users Group - Help Manual

*Methodology*
Command:	3.1
Alpha Alias:	Direction IntOS
Description:	Computes points at intersection of two bearings parallel to and offset from two known lines
Data Format:	3.1 Set From1 Bearing1 Offset1 From2 Bearing2 Offset2 {[From Bearing Offset]...} ;
Problem:	Given points 1, 2, 3, 100 and 215. Set offset intersection points 20, 21, 22 and 213 as shown.
Solution:	3.1 20 1 1 2 18 2 2 3 15 215 100 215 –12.5 215 –9 0 215 –9 12.5 ;

Data Description

Command	3.1	Computes a point at the intersection of two lines or bearings that are parallel to and offset from two known lines. Bearings may be entered by using quadrant definition and angle, or by using point definitions.
Set	20	Number of the initial point to be computed.
From1	1	Number of a previously computed or stored point which defines the first known line.
Bearing1	1, 2	Direction of the first known line.
Offset1	18	Distance between the first known line and the parallel line on which the computed point will be set. Note: If you want the parallel line to lie to the left of the known line, you must enter this distance as a negative number.
From2	2	Number of a previously computed or stored point which defines the second known line.
Bearing2	2, 3	Direction of the second known line.
Offset2	15	Distance between the second defined line and the second parallel line which will intersect the first parallel bearing at the set point. Note: If you want the parallel line to lie to the left of the known line, you must enter this distance as a negative number.
{[From Bearing Offset]...} ;	215 100, 215 -12.5	Repeating feature of this command. The -12.5 is an offset distance to the left.
{[From Bearing Offset]...} ;	215 -9 0	Repeating feature of this command. The -9 in this case is the last bearing from 100 to 215. The 0 is no offset distance.
{[From Bearing Offset]...} ;	215 -9 12.5	Repeating feature of this command. The -9 in this case is the last bearing from 100 to 215. The 12.5 is an offset distance to the right.
End Command	;	All commands end with a semi-colon.

Example Command File

$ Example data set for 3.1 
$    (DIRECTION INTOS) command.

$ Set intial known points.
  0 
    1 1080.0 1450.0 
    2 1124.4 1651.8 
    3 1078.4 2023.5 
  100  826.4 1740.8 ;

  1 215 100 
            -4 10 0 0 150 ;

$ Set points using the 3.1 command.
  3.1 20 
          1   1   2  18 
          2   2   3  15 
        215 100 215 -12.5 
        215  -9   0 
        215  -9 12.5 ;

$ Set additional points for drawing lines.
  1 1000 20 2 1 200 ;
  1 1001 20 2 3 400 ;
  1.2 1002 22 1001 3 ;
  1.2 1004 20 1000 2 ;
 -2 1005 100 100 215 
                    -15 0 0 150 
                     35 0 0 150 ;
  1 1007 1005  -3 65 0 0 150 ;
  1 1008 1006  -2 65 0 0 200 ;
  4 1009 21 22 215 100 215 150 ;
  4 1010 23 22 215 100 1005 150 ;
 -3 1011 1006 1006 1008 1003 ;
 -3 1012 1005 1005 1007 1004 ;
  4 1013 1002 1002 100 100 1006 150 ;

$ Setup plotting parameters with 
$  feature, layer, color, style, thickness
  15.1 L1 LINES1 7 1 1;
  15.1 L2 LINES2 1 1 1;

$ Turn plot on
  91;

$ Activate the current feature
  15 L1 ;
           $ Draw the lines.
             7 1 1 2 3 ;
             7 1 1000 20 1001 ;
             6 1 100 1005 
                 100 1006 ;
             7 1 1007 1005 100.1 1006 1008 ;

$ Activate new feature
  15 L2 ;
           $ Draw more lines.
             7 1 21 1009 ;
             7 1 22 215 ;
             7 1 23 1010 ;
             7 1 1002 1013 ;
             7 1 1003 1011 ;
             7 1 1004 1012 ;

Help for this command was last updated: 11/10/2000 9:27:48 AM

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Group:Command:

3) Brg-Brg Intx3.1 or Direction IntOS

Group:
Command:

3) Brg-Brg Intx
3.1 or Direction IntOS