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iPOGO V5 Help Manual On-Line |
Group: |
18) Translation |
Methodology | |
| Command: | 18.3 |
| Alpha Alias: | Translate Renum |
| Description: | Translates deed points to field points using specified bearing and rotation factor while renumbering new points |
| Data Format: | 18.3 Set Field-Point Bearing Deed-Points ; |
| Problem: | Given field points 17, 18, 19, 20, 21 and 22 and deed points 101, 102, 103, 104, 105 and 106; the determination that deed point 101 corresponds to field point 17; and the rotated deed bearing must equal N 45°30'12"E on the first course. Rotate the deed to the desired bearing; equate the coordinates of point 101 to point 17 and re-coordinate and assign new point numbers starting with 501 to points 101 through 106 using deed angles and distances from point 101 without applying a distance factor. (See example data file for complete solution.) |
| Solution: | $ reset rotation and scale factors to default values
10 0 0 0 1 ;
$ perform translation and renumber
18.3 501 17 -1 45 30 12
101 102 103 104 105 106 ; |
Data Description
| Command | 18.3 | Translates deed points to field points using the specified bearing for the first course and then applys any pre-existing angle of rotation as computed in the 10 or -10 command. Assigns new point numbers to the adjusted deed coordinates.
The field and deed points are entered in the reverse order of the 10 and -10 command. You must enter the field point first in the 18.3 command. The distance factor defined by the 10 or -10 command is ignored. The 10 or -10 command is NOT required by the 18.3 command for operation. Note 1: Previous versions of iPOGO reset the stored angle of rotation to 0 (zero) and the distance factor to 1 (one) when execution of this command was completed. This version restores any pre-existing rotation and scale factors assigned by the 10 or -10 commands prior to the execution of the 18.3 command. Note 2: Previous versions of the iPOGO help manuals indicate that the 18.3 command applied the distance factor from the 10 or -10 commands to the deed distances. However, this has not been confirmed by actual program testing of DOS versions back to the 1985 release. |
| Set | 501 | Point number to be assigned to the first adjusted deed coordinate. Subsequent adjusted coordinates will be numbered automatically from this point number. |
| Field-Point | 17 | Point number of the field point that is to be used as the starting coordinate, or point of rotation. |
| Bearing | -1, 45, 30, 12 | Direction of the first adjusted deed line or course. The bearing may be defined by two points or by a known bearing. |
| Deed-Points | 101
102 103 104 105 106 | Previously computed deed point numbers to be equated with the field points.
Enter the first deed point that corresponds with the specified field point. Then enter, in order, the deed points which define the deed lines. The first course is rotated to the specified bearing and then altered by the angle of rotation from the previously executed 10 or -10 command. Deed angles and distances are then used to reset the remainder of the deed points with new point numbers. |
| End Command | ; | All commands end with a semi-colon. |
Example Command File
$ Example data set for the 18.3
$ (Translate Renum) command.
$ Set the initial points.
0 17 1620.0 508.3
18 2310.0 1225.0
19 1620.0 1825.0
20 1770.0 2691.7
21 1000.0 1783.3
22 1060.0 983.3
101 1733.5 3217.0
102 2333.5 3967.0
103 1583.5 4579.5
104 1808.5 5579.5
105 908.5 4592.0
106 1028.5 3592.0 ;
$ reset the default rotation and scale factors
10 0 0 0 1 ;
$ Translate and renumber the deed points
$ using the 18.3 command.
18.3 501 17 -1,45,30,12 101 102 103 104 105 106 ;
$ reset angle rotation and distance factors to default
10 0 0 0 1 ;
$ define the feature code parameters
$ cmd fea layer color style thickness
15.1 fpts fieldpts 1 1 1;
15.1 dpts deedpts 3 1 1;
15.1 npts newpts 4 1 1;
15.1 chk check 2 1 1;
$ turn plotting on
91 ;
$ activate the fieldpts feature and inverse the boundary
15 fpts;
100 Field points closure ;
7 1 17 18 19 20 21 22 17 ;
$ activate the deedpts feature and inverse the boundary
15 dpts;
100 Original deed closure ;
7 2 101 102 103 104 105 106 101 ;
$ activate the newpts feature and inverse the boundary
15 npts;
100 Transformed deed closure with new numbers ;
7 3 501 502 503 504 505 506 501 ;
$ activate the check feature and inverse the boundary
15 chk;
100 Comparison of field, deed and transformed lines;
6 1 17 21 101 105 501 505 ;