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Landbutcher464MHz
Landbutcher464MHz
@landbutcher464mhz
Member P&R
Joined: September 15, 2023 11:33 pm
Last seen: September 14, 2026 10:30 pm
Topics: 4 / Replies: 252
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RE: Comparing two surveys

Also check the elevation for point 3102. Back on page 2 of this post you posted a file with #3102 Elev=1003.03'. Your Excel file has Elev=1003.30'?

9 months ago
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RE: Comparing two surveys

My latest sketch is based on the coordinates in your latest Excel file. Are the eastings and northings reversed in that new file?

9 months ago
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RE: Comparing two surveys

Here is an update on my previous "Sketch 04". Your latest Pathways.xlsx file has the coords in East / North. Previously I entered your data as North /...

9 months ago
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RE: Comparing two surveys

@rfc "Is there a way of "packaging up" an entire Starnet project? I've got about 25 .dat files. I'm not doing so well cleaning up the mess I've create...

9 months ago
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RE: AI "helper"

@not-my-real-name "So, if it is really intelligent, then why can't it take a hint?" Exactly. It is basically intruding into my email and just repeat...

9 months ago
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RE: Linear Regression with Ordinary Least Squares

@summerprophet " If I take the entire project as a whole, original control varies from the plan by as much as 300 feet. Even reducing to the best 7 or...

9 months ago
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RE: Comparing two surveys

@rfc " I can also compare his measurements of my other control points." That is a very good idea and @lurker has a good observation about you and th...

10 months ago
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RE: Comparing two surveys

@rfc "the reason I want to change my elevations, survey wide, is because I’m accepting my surveyor’s elevation at his base (100) to be correct. He was...

10 months ago
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RE: Comparing two surveys

@mathteacher "Interesting. But if you enter 1.00000000, you get ground." Yes but only when using an EDM. When using GPS with a combo/scale factor of...

10 months ago
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RE: Comparing two surveys

@rfc "If I assume my surveyor's GNSS coordinates at point 100 are correct, can I put them in the "Coordinates at Station" and run an adjustment?" I ...

10 months ago
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RE: Comparing two surveys

@rfc "I ask as I'm now looking at the discrepancies between my elevations and those determined by my GPS surveyor. I may have errantly mixed ground an...

10 months ago
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RE: Comparing two surveys

@rfc "That said, when the surveyor recorded the corners, the canopy was still very much in place; that's why I asked about GPS accuracy for elevation....

10 months ago
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RE: Comparing two surveys

+0.46' to -0.64' is huge and I am going to assume that that error is between the surveyor elevations and your traverse elevations. 1.) Did you doubl...

10 months ago
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RE: Comparing two surveys

0.05' split is a bit much. Every piece of your equipment can have a little error and shooting from both ends is a good procedure to reduce errors. I w...

10 months ago
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RE: Comparing two surveys

@rfc Unadjusted measurements from 3102-2 averaged 239.3965'. 2-3102: 239.4475. The GPS inverse is 239.02' and your original adjusted traverse distan...

10 months ago
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RE: 2026 Solar Ephemeris

Pretty cool calculator. I have no plans to do a sun shot but it is nice to know about some of the resources.

10 months ago
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RE: 2026 Solar Ephemeris

3 weeks a go, Oct 24, there was a post named "Shoot The Sun". There was an Ephemeris page as some other stuff you might like.

10 months ago
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RE: Time and Entropy are undefeated

@mightymoe DOT multiplied grid coordinates by the scale factor, so we continued with that system.   That is not correct in my area becau...

10 months ago
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RE: Data Collector with Solar Observation Module

I dug out my old Nomad 800. It has Survey Pro 5.2 and under Survey it has Solar Observation. I have never used that one but I looked at the settings a...

10 months ago
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RE: Data Collector with Solar Observation Module

Are you asking about the HP48 with the TDS Survey Card? It has a Sun Shot routine that I used a few times 20 years ago. It was easy to use and the res...

10 months ago
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