DPOS results question

David M. Simolo

Well-Known Member
I revisited a job yesterday using the T2 base and Triumph-LS rover combination, setting the base on a known point from a previous visit to the same site. In my geographic area I almost exclusively use NYS Plane Central zone. Technically I was just across a county line on this job site and this county is designated as the Western zone.

Everything on site went normally. I just DPOS'd my results using CORS solutions, as usual. Normally one of the first things I do is check my combined factor for my base setup as I will be applying this to my work in my office software as a ground layer. Upon evaluating the DPOS Report output screen for the base point's CORS data I noticed that it designates the state plane results as being in the Western zone. My project coordinates are clearly being displayed in the Central Zone that I want but I want to try to understand all of this and verify the validity of the combined factor. This combined factor plays well with other work I have done at the same approximate longitude and elevation that happens to lie within another county in the Central zone.

Having also checked another job where the equipment was used in a similar fashion with the base located in the Central zone the DPOS Report recites the Central zone.

Any thoughts?
 

Matt Johnson

Well-Known Member
5PLS
DPOS automatically determines the report coordinate system based on location. If you want to calculate the scale factor for some other coordinate system you can use the Factors tool in CoGo.
 
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