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iPOGO V5 Help Manual On-Line |
Group: |
900) Sub Commands |
Methodology Number 1 of 2 | |
| Command: | 8E8 |
| Alpha Alias: | DAN |
| Description: | Defines distance by angle and radius (variation: angle only in intersection command Groups 3,4,5) (variation: defines a vertical angle and slope distance in the 2 command) |
| Data Format: | 8E8 Angle Radius |
| Problem: | Given point numbers 2 and 3. Set point number 4 using a central angle of 51°13'36" and a radius of 140 feet. |
| Solution: | 1 4 3 2 3 8E8 51 13 36 140 ; |
Data Description
| Sub-Command | 8E8 | Computes a distance by modifying the last bearing and using a specified radius length and angle between bearings. The 8E8 sub-command reverses the last bearing used 180° and adds the angle to define the new bearing. The bearing saved is directed towards the point being set. The point is then set on this new bearing at a distance equal to the radius.
The 8E8 sub-command depends upon a previously defined bearing which is either entered just before 8E8 or has been retained by the 9E9 or -9E9 sub-commands. If used in conjunction with 9E9 or -9E9, the bearing retained is altered by 8E8, and is directed from the radius point to the point being set. Note: The 8E8 sub-command and the 7E7 sub-command are complimentary. When used with 9E9 and -9E9, they provide the means to compute coordinates continuously around any previously defined configuration of arcs and tangents. Note: The sub-command 8E8 will function in the intersection commands 3, -3, 3.1, -3.1, 4, 4.1 and -4.1, but the entry must be made preceding the bearing entry rather than following it. See Methodology 2. Note: See the 2 command for a discussion of vertical angle and slope distance reduction with the 8E8 sub-command. |
| Angle | 51 13 36 | Angle between the input bearing and the desired bearing, given in degrees, minutes and seconds. Enter a minus sign in front of the degrees to turn a left angle.
Warning!!! Previous versions of iPOGO required each item to be negative in order to turn an angle to the left. If the degrees were negative and the minutes and seconds were positive, the degrees were turned to the left and the minutes and seconds were turned back to the right. This version of iPOGO turns the degrees, minutes and seconds to the left if the degrees are negative and not equal 0. Recommend setting each of the degrees, minutes and seconds data items to negative for left angles. |
| Radius | 140 | Radius length in feet. |
| No End of
Sub-Command | | No end of sub-command is required for 8E8. |
Example Command File
$ Example data file for the 8E8 (DAN) command,
$ Methodolgy 1
$ set initial points
0 3 1000 1000 ;
1 2 3 -4 25 36 48 140 ;
$ set point 4 with the 8E8 sub-command
1 4 3 2 3 8E8 51 13 36 140 ;
$ define feature code
15.1 CL CenterLine 7 1 1 ;
$ turn on plot
91 ;
$ activate the feature code
15 CL;
100 Inverse the solution;
7 1 4 3 2 3.1 4 ;
Methodology Number 2 of 2 | |
| Command: | 8E8 |
| Alpha Alias: | DAN |
| Description: | Defines distance by angle and radius (variation: angle only in intersection command Groups 3,4,5) (variation: defines a vertical angle and slope distance in the 2 command) |
| Data Format: | 8E8 |
| Problem: | Given points 1, 2 and 3. Use the 3 (Direction Int) command to set point 21 by bearing bearing intersection. |
| Solution: | 3 21 1 8E8 29 30 50 1 2
3 8E8 -52 30 00 3 2 ; |
Data Description
| Sub-Command | 8E8 | Computes a distance by modifying the last bearing and using a specified radius length and angle between bearings. The 8E8 sub-command reverses the last bearing used 180° and adds the angle to define the new bearing. The bearing saved is directed towards the point being set. The point is then set on this new bearing at a distance equal to the radius.
The 8E8 sub-command depends upon a previously defined bearing which is either entered just before 8E8 or has been retained by the 9E9 or -9E9 sub-commands. If used in conjunction with 9E9 or -9E9, the bearing retained is altered by 8E8, and is directed from the radius point to the point being set. Note: The 8E8 sub-command and the 7E7 sub-command are complimentary. When used with 9E9 and -9E9, they provide the means to compute coordinates continuously around any previously defined configuration of arcs and tangents. Note: The sub-command 8E8 will function in the intersection commands 3, -3, 3.1, -3.1, 4, 4.1 and -4.1, but the entry must be made preceding the bearing entry rather than following it. Note: See the 2 command for a discussion of vertical angle and slope distance reduction with the 8E8 sub-command. |
| Angle | -52 30 0 | Angle between the input bearing and the desired bearing, given in degrees, minutes and seconds. Enter a minus sign in front of the degrees to turn a left angle.
Note: Previous versions of iPOGO required each item to be negative in order to turn an angle to the left. If the degrees were negative and the minutes and seconds were positive, the degrees were turned to the left and the minutes and seconds were turned back to the right. This version of iPOGO turns the degrees, minutes and seconds to the left if the degrees are negative. |
| No End of
Sub-Command | | No end of sub-command required for 8E8 |
Example Command File
$ Example data file for the 8E8 (DAN) sub-command,
$ Methodolgy 2
$ set the initial points
0 1 1000 1000 ;
1 2 1 -1 60 0 0 90
-2 60 0 0 70 ;
$ set point 21 with the 8E8 sub-command
3 21 1 8E8 29 30 50 1 2
3 8E8 -52 30 0 3 2 ;
$ define feature code
15.1 PL PropLine 7 1 1 ;
$ turn on plot
91 ;
$ activate the PL feature
15 pl ;
100 Inverse the results;
7 1 1 -3 21 1;