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iPOGO V5 Help Manual On-Line |
Group: |
900) Sub Commands |
Methodology Number 1 of 2 | |
| Command: | 9E9 |
| Alpha Alias: | RTB |
| Description: | Rotates a bearing 90 degrees from the last bearing (variation: defines a series of vertical angles and slope distances in the 2 command) |
| Data Format: | 9E9 Distance {[Distance].. } 0 |
| Problem: | Given point 20 on a line bearing South 73° 00' 00" East. Set points 21, 22 and 23 by turning 90° angles at points 21 and 22. |
| Solution: | 1 21 20 -2 73 00 00 66.1
9E9 25
-30
0 ; |
Data Description
| Sub-Command | 9E9 | Saves the last bearing used in the 1 command and then uses that bearing to compute additional points by turning 90° from the last point set in the 1 command. Computes a point at 90° for each distance following the command.
Sub-command 9E9 will function in the intersection commands 3, -3, 3.1, -3.1, 4, 4.1 and -4.1. Entered immediately preceding the bearing, 9E9 will rotate the defined bearing 90°. Sub-command 9E9, when used in the intersection commands, does not have a distance and is not terminated by a zero. The 9E9 sub-command and the -9E9 sub-command may be used together without ending the original sub-command. Each one supersedes the other. The distances entered following the each sub-command produces points at 90° to one another or on a line, as the sub-command directs. The last bearing is always directed toward (into) the last point set. Note: 7E7 and 8E8 sub-commands may also be used in conjunction with this sub-command as they provide the means to compute coordinates continuously around any previously defined configuration of arcs and tangents. |
| Distance | 25 | Length of the line from the known point to the point being computed by the 1 command. The retained bearing is directed toward the last point set.
If a negative number is entered following the 9E9 subcommand, the point is set in the opposite direction and the bearing is rotated accordingly. |
| {[Distance].. } | -35 | Repeating feature of this sub-command within the 1 command. Numbers separated by commas or spaces following the command are read as distances until the end sub-command 0 or ES is encountered. |
| End of
Sub-Command | 0 | End of sub-command is a 0 (zero) or ES within the 1 command. No end of sub-command needed in the intersection command Groups 3 or 4. |
Example Command File
$ Example data file for 9E9 (RTB) command,
$ Methodology 1
$ set initial points
0 20 1000 1000 ;
1 21 20 -2 73 00 00 66.1
9E9 25
-30
0 ;
$ define feature code
15.1 PL PropLine 7 1 1;
$ turn plot on
91 ;
$ activate the features
15 pl ;
100 Inverse the results;
7 1 20 -23 ;
Methodology Number 2 of 2 | |
| Command: | 9E9 |
| Alpha Alias: | RTB |
| Description: | Rotates a bearing 90 degrees from the last bearing (variation: defines a series of vertical angles and slope distances in the 2 command) |
| Data Format: | 9E9 |
| Problem: | Given points 1 through 5. Set points 21 and 22 using a 3 (Direction Int) command for bearing bearing intersections. |
| Solution: | 3 21 1 9E9 1 2
3 9E9 2 4
5 9E9 4 5 ; |
Data Description
| Sub-Command | 9E9 | Sub-command 9E9 will function in the intersection commands 3, -3, 3.1, -3.1, 4, 4.1 and -4.1. Entered immediately preceding the bearing, 9E9 will rotate the defined bearing 90°. Sub-command 9E9, when used in the intersection commands, does not have a distance and is not terminated by a zero. |
| No End of
Sub-Command | | No end of sub-command 9E9 allowed in the intersection command Groups 3 or 4. |
Example Command File
$ Example data file for 9E9 (RTB) command,
$ Methodology 2
$ set initial points
0 1 1000 1000 ;
1 2 1 -1 45 0 0 100
-2 45 0 0 100
-2 45 0 0 50
-1 45 0 0 50 ;
$ set points 21 and 22 at 90° using the 9E9 command
3 21 1 9E9 1 2
3 9E9 2 4
5 9E9 4 5 ;
$ define feature code
15.1 PL1 PropLine1 7 1 1;
15.1 PL2 PropLine2 1 1 1;
$ turn plot on
91 ;
$ activate the features
15 pl1 ;
100 Inverse the known line;
7 1 1 -5 ;
15 pl2 ;
100 Inverse the results;
7 1 1 21 22 5 ;