One of those things, we all have done something similar, just have to go back and re locate the points.?ÿ
A 3 pt angle only resection off distant towers or other landmarks that have known coordinates is one use I can think of.
Solar/Astronomic observations is another.
OK, I've got to ask: why would one store angles only without a distance?
There have been a few times where I couldn't get a good reflectorless return off of an object (usually a wire, or something at a very oblique angle), and was working solo. Tie it with the same point number from a different setup using "angles only", tell it to average the observations, and you'll get a 3D point at the averaged intersection of those angles.
It's pretty rare though, think I have done it maybe a handful of times in 15 years. And I always measure distances with resections...
@rover83?ÿ?ÿ you may be on to something - about 1/2 of these shots were end of white parking space stripe - which had never given me trouble before. but, the other half were solid concrete angle points which should give me solid distances -
the good news is that I took enough supplemental GPS shots that I can piece together this one area that is surrounded with good data (both GPS and Robot), but I am inclined to punish myself and return to the site and do it correctly - sort of an idiot trip - maybe I'll pay attention next time.
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@rover83 you do this in TBC? I've never been able to get that to work, though I thought it should.
