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UTM Transformation
What kind of transformation we can assume about utm to local coordinate transformation.(conformal,projective,affine,…..).
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3 Replies
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You can’t assume anything, you can only go where the data takes you
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A “local coordinate transformation” can be anything. Need more information. Perhaps you mean converting UTM to State Plane?
A UTM is, as the name suggests, a transverse mercator projection, and a TM projection is conformal.
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You can assume an affine transformation over some small region with modest error due to the distortion of distances. The errors will get large over only a few miles/kilometers of north-south spread, and the higher the latitude the more error.
Find the UTM scale factors at the corners of a UTM “rectangle” containing your project and compute the distance error on the rectangle using an average scale factor.
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