Well, I've finally faced what I knew I'd have to all along: I have to settle on some software to move forward with my education. Even sooner than a data collector (my field book is now mostly working ok, mistakes aside).
In the mean time, I'm attempting to compare a recent traverse between two pins (28 and 33), to an old (1980) survey, as follows:
Assume the back sight azimuth is: N30-31E. I'm preparing to do a Polaris sight to confirm azimuth locally (stay tuned, lol). That azimuth does not match a more recent one established via GPS.
I am notating the directions in Starnet format for convenience:
M 21-28-30 268-25-41 245.005
M 28-30-31 160-42-52.5 250.345
M 30-31-32 192-37-56 513.867
M 31-32-33 159-45-01 24.937
The call from the old survey is "N70-25W 1025 +/-"
So far I've calculated the distance to be 1025.253, but I'd love confirmation of that. Errors in my math so far have prevented me from knowing the azimuth so far, so I wouldn't mind knowing that either. As far as I know, there's no way to calculate a call between two points in Starnet.
Edit: I know there's a problem with the azimuth, possibly by 37'-39' or so, so it wouldn't surprise me if I'm off by that, at least.
Bottom line, how does my traverse compare with the old call out?
To let Star*Net calculate something, put in a fake measurement with a * after it (in the place a ! would go to hold it fixed).
D 10-9 812 *
A 7-1-4 118-16-00 *
But for education, you should be able to calculate a distance or azimuth from the coordinates that Star*Net found for the points. Use a calculator or spreadsheet so you have gone through the formulas and are familiar with them.
> To let Star*Net calculate something, put in a fake measurement with a * after it (in the place a ! would go to hold it fixed).
> D 10-9 812 *
> A 7-1-4 118-16-00 *
>
> But for education, you should be able to calculate a distance or azimuth from the coordinates that Star*Net found for the points. Use a calculator or spreadsheet so you have gone through the formulas and are familiar with them.
Thanks! That works great!
Regarding the formulae, believe me, I'm familiar with them! VERY familiar. I just make more mistakes going from D-M-S to decimal, to use for the trig, and then back again. It's becoming unproductive. I was in Starnet trying your idea out and clicked a button in the plot menu by accident right next to the "plot options" button...it gives you the inverse between any two points!
The only problem is that It's the adjusted inverse,(as is the solution you suggest above), not what it would be from the measurements themselves.
I think I should be able to hold all the measurements fixed and try it again.
Thanks again.
Post does not belong in Land Surveying, but in Education
Please see subject line.
I just make more mistakes going from D-M-S to decimal, to use for the trig, and then back again.
A cheap $10 calculator, would fix that, if you can hit the correct keys. LOL
