After you get a set of equations of the form above, you can turn them into a matrix * vector = vector equation.?ÿ The matrix elements are the coeffici...

Wolf & Ghilani text has some examples of linearizing equations, with enough of the steps given that you should be able to follow if you are acquai...

Posted by: squowse 2 point free station has almost no redundancy It has one redundant value as a check on two derived values, better than nothing but ...

It's title insurance, not boundary insurance.?ÿ They only back up the claim to owning a parcel, against claims by others that might say it was not pro...

Posted by: Dave Lindell Worse case: setting up on a circle that all the points are on. If it were angles only, yes.?ÿ But as Jim noted, nowadays peopl...

I'd say after looking at their priority list, that it was made based mostly on location relative to gaps between HARN etc. stations, and bumped up by ...

Posted by: sirveyr Would it be acceptable to set a new mark in the area to help "tighten things up"? It might be useful for local surveyors but it won...

Posted by: linebender It seems strange to resubmit photos and a description on a point that already has a shared solution. What happens to the already...

I know l*wyers like to use lots of words where a few would do,?ÿ so is there any difference between "for" and "on behalf of" or is it completely redun...

Posted by: Sergeant Schultz chasing contours on flat surfaces I understand what you mean, but still have to chuckle at the wording. ?ÿ

I try to remember statements like that from the south while I'm shoveling snow in freezing temperatures.

Posted by: thebionicman Do you have enough equipment to obtain some simultaneous data? I often find OPUS to provide solutions well outside 3cm, even w...

Yes, I mis-spoke when I linked NAVD88 with xGeoid17b.?ÿ Just read that as orthometric assuming xGeoid17b.?ÿ That definition of 17b is why the offset I...

Yes, I was using the OPUS report numbers.?ÿ The main report gives ellipsoidal height as measured by the session, and the ortho NAVD88 value assuming G...

I got around to re-reading the Reset procedure that John linked above.?ÿ It does include instructions for using an optical level, not only digital.?ÿ ...

Tipton, Iowa, Civil War monument.?ÿ I haven't been to the site, but grabbed a photo from Geocaching. ?ÿ

A later thread on vertically mounted or sky-obscured marks

Glad to see you pursuing this.?ÿ I also asked during the webinar yesterday, but the answer we got then was just use a different BM from the old level ...

Definitely good info to have. If I did the conversion correctly, its location appears in google earth to be a bit vulnerable to someone deciding to ta...

Your picture does come up if I click on the little box.?ÿ Maybe it's the way Dropbox works that the picture won't embed? ?ÿ