Would some kind person tell me why Starnet will not accept the following traverse?
I don't have much experience with the software and it is asking for approximate co-ordinates. I think it should be able to calculate it though.
It is a 4 leg traverse between 2 GPS points. I don't have co-ordinates for the intermediate stations.
Please see below, sorry can't see how to attach the file
Thanks
ps I do know how to calculate it myself, but trying to learn the software. I have a much longer one to do as well and also hundreds of intermediate observations so don't want to calc all of them!
[inlinecode]
.Units Meters
.Units DMS
.Order EN AtFromTo
.Sep -
.3D
.scale 0.9996
C rw12 391705.678 385065.284 77.903 ! ! !
C rw13 391896.454 385037.092 79.611 ! ! !
DV 10000-rw12 38.7657 86-41-10.51 1.610/1.755 'nail
M 10000-rw12-10001 251-28-38.34 51.8318 89-28-53.69 1.610/1.575 'peg
DV 10001-10000 51.8226 90-31-00.10 1.575/1.610 'peg
M 10001-10000-10002 141-38-43.49 41.6604 85-57-21.42 1.575/1.800 'peg
DV 10002-10001 41.6399 93-20-01.17 1.495/1.800 'peg
M 10002-10001-rw13 176-08-28.59 78.3852 89-30-08.43 1.495/1.540 'rw13
[/inlinecode]
I'm not sure if it matters but the quality of the traverse measurements is not as high as it could be.
There are horizontal distance errors of 10-15mm and an overall level misclosure of about 50mm compared to the GPS stations.
Would this stop the initial calc and make it require approximate co-ordinates for the intermediate stations before it could do the least squares analysis?
You need to provide a seed coordinate for pt 10000. That enables Starnet to make its first iteration. Since you will not be "holding" it you follow it with asterisks instead of exclamation marks.
C 10000 392xxx.xx 385xxx.xx 77.xx * * *
I love StarNet, one of the best tools I ever had, don't get discouraged. It is worth learning.
I don't use it much now but to trouble shoot I used to free up the measurements to see where the bad measurement or typo might be.
go to the global settings and give some huge angular and distance tolerances. If it closes, see where the big adjustments are.
I always had more trouble with a 3D traverse, try making just the vertical free and see what that does.
you can also try freeing up one of your control point values...
PS: what Norman said
Or a free bearing from 10000-rw12 would work.
B 10000-rw12 N45-45-45.00W *
> Since you will not be "holding" it you follow it with asterisks instead of exclamation marks.
> C 10000 392xxx.xx 385xxx.xx 77.xx * * *
Note that the asterisks aren't necessary when entering a free coordinate, since there is no default standard error for coordinates.
Thanks everyone for the help I will try to generate a rough co-ordinate for the first intermediate station.