iPOGO V5 Users Group - Help Manual

*Methodology Number 1 of 2*
Command:	3
Alpha Alias:	Direction Int
Description:	Sets point(s) at the intersection of two or more lines or bearings
Data Format:	3 Set From1 Bearing1 From2 Bearing2 {[From Bearing]...} ;
Problem:	Given point number 19 on a line bearing North 61°05'20" East and given point number 20 on a line bearing South 55°10'00" East, set point number 21 at their intersection.
Solution:	3 21 19 -1 61 5 20 20 -2 55 10 0 ;

Data Description

Command	3	Sets a point at the intersection of two lines or bearings. Bearings may be entered using quadrant definition and angle, or by using point definition.
Set	21	Point number of the intersection that you want to compute
From1	19	Previously stored point number from which the Set point coordinates are to be computed.
Bearing1	-1 61 05 20	Direction of the first line on which the point is to be computed. Bearings may be entered using quadrant definition and angle, or by using point definition.
From2	20	Second previously stored point number from which a line will intersect the first bearing at the Set point.
Bearing2	-2 55 10 00	Direction of the second line which will intersect the first bearing at the set point. Bearings may be entered using quadrant definition and angle, or by using point definition.
{[From Bearing]...}		Repeating feature of this command. Intersects with the line defined by From2 and Bearing2. See Methodology 2 for additional information.
End Command	;	All commands end with a semi-colon.

Methodology Number 2 of 2

Command: 3

Alpha Alias: Direction Int

Description: Sets point(s) at the intersection of two or more lines or bearings

Data Format: 3 Set From1 Bearing1 From2 Bearing2 {[From Bearing]...} ;

Problem: Given the following: point number 19 on a line bearing North 61°05'20" East; point number 20 on a line bearing South 55°10'01" East; points 17 and 18, each on a line parallel to the line through point number 19; and also given points 15 and 16. Set points 21, 22, 23 and 24 at the line intersections.

Solution:
3 21 19 -1 61 05 20 20 -2 55 10 00 18 -9 17 -9 16 16 15 ;

Data Description

Command	3	Sets a point at the intersection of multiple lines or bearings. Bearings may be entered using quadrant definition and angle, or by using point definition.
Set	21	Point number of the intersection that you want to compute.
From1	19	Previously stored point number from which the Set point coordinates are to be computed.
Bearing1	-1 61 05 20	Direction of the first line on which the point is to be computed. Bearings may be entered using quadrant definition and angle, or by using point definition.
From2	20	Second previously stored point number from which a line will intersect the first bearing at the Set point.
Bearing2	-2 55 10 00	Direction of the second line which will intersect the first bearing at the set point. Bearings may be entered using quadrant definition and angle, or by using point definition. Additional Points of Intersection are numbered automatically from the Set point value.
{[From Bearing]...}	18 -9	Repeating feature of this command. Note: The -9 as used here recalls the Bearing1 value which was the last bearing used to intersect the Bearing2 value.
{[From Bearing]...}	17 -9	Repeating feature of this command. Note: The -9 as used here recalls the Bearing1 value which was the last bearing used to intersect the Bearing2 value.
{[From Bearing]...}	16 16 15	Repeating feature of this command. Note:The bearing here is defined by the coordinates of two existing point numbers, 15 and 16.
End Command	;	All commands end with a semi-colon.

Example Command File

$ Example data set for 3 (DIRECTION INT) command, 
$   Methodology 2.

$ Set initial points from known coordinates.
  0 
    15 2480.00 4658.30 
    16 1430.00 1966.70 
    17 1450.00 1340.00 
    18 1600.00 1340.00 
    19 1740.00  908.30 
    20 1720.00 3625.00 ;

$ Use the 3 command to set the intersection points.
  3 21 
       19 -1 61 05 20 
       20 -2 55 10 00 
       18 -9 
       17 -9 
       16 16 15 ;

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

$ Turn plot on
  91;

$ Activate the current feature
  15 L1 ;
          $ Draw the lines.
            7 1 19 21 20 ;
            7 2 18 22 ;
            7 3 17 23 ;
            7 4 16 15 ;

Help for this command was last updated: 06/27/2000 11:30:03 PM

iPOGO V5 Help Manual On-Line

Group:Command:

3) Brg-Brg Intx3 or Direction Int

Group:
Command:

3) Brg-Brg Intx
3 or Direction Int