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  1. jonathan2

    Geodetic Reference Systems, TRX, INDIR, Distance Calculated

    this is for 3D pipeline modelling in FEA software packages for stress analysis. 3 mm is acceptable error... so i'm satisfied now.
  2. jonathan2

    Geodetic Reference Systems, TRX, INDIR, Distance Calculated

    http://geographiclib.sourceforge.net/ --> free library saves me the coding i would have done when provided an equation. also after realizing my fault with the basic Cartesian distance formula. i requested output from TRX in Cartesian coordinates and recalculated the distance. ans = 12899.425...
  3. jonathan2

    Geodetic Reference Systems, TRX, INDIR, Distance Calculated

    okay i've done some reading... it appears TRX and INDIR are based on the same ellipsoid so thats a good start... "The NAD83 is an earth-centered datum based on a newly defined ellipsoid – the Geodetic Reference System of 1980 (GRS80) – and its reference point is the center of the earth, as...
  4. jonathan2

    Geodetic Reference Systems, TRX, INDIR, Distance Calculated

    Hello, I'm a materials engineer so i don't have a background or any schooling in geomatics and haven't bothered to do much reading in the field. I've been messing around with some online applications provided by the government of canada...

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