Okay, can anyone tell where you find the confidence level for the 'Error' reported in the adjusted coordinate portion of TBC's adjustment reports.?ÿ Is it 1 sigma, 1.95 sigma or something else.?ÿ I have not used any Trimble software since TGO.?ÿ I've been given an adjustment report for the primary control I'm supposed to hold on a several miles long project and my first task it to evaluate the provided data.
It's near the top of the report, second section.
First section is Adjustment Settings, then the next section is Adjustment Statistics:
Found it.?ÿ Thanks
Unfortunately they reported to DRMS instead of 95%, which I was guessing based on how tight they reported.?ÿ Apparently they are really good at setting up their equipment since the setup errors is set to zero.
I was going to say...if you're doing the adjustment, be sure to put a little error in your setups. I use 0.005' because I'm good but I'm not that good. ???? ?????ÿ
T. Nelson - SAM
Ugh. I'd lay odds that they had to apply some serious scalars to pass the chi-squared test.
TBC defaults to zero centering and measure-up errors for the very reason that it's super obvious when you run that first minimally-constrained adjustment.
When I see reports and deliverables like that it throws all sorts of red flags...
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I was going to say...if you're doing the adjustment, be sure to put a little error in your setups. I use 0.005' because I'm good but I'm not that good.
It's interesting how with a little bit of experience and practice we can dial in our standard errors.
Even more interesting: when I am troubleshooting data, I will loosen or tighten up those values based upon the office I am working with. Some offices run a really tight ship, and others....well, I'm just surprised that they can even see the point through the optical plummet. Regular calibration and adjustment makes a huge difference.