Re: Help with Geocaching Triangulation problem - what is the best calc for this? Message #2 Posted by Vieira, Luiz C. (Brazil) on 26 Jan 2003, 1:22 p.m., in response to message #1 by Mark Gessner
Hi;
I once dealt with a subject closer to this: given (M-1) coordinates and the expected area that define a M-coordinates polygon (a surface area), find the Mth coordinate (the "unknown" side could shift or rotate). I have the basic knowledge for surveying (I was a regular student at the surveying classes when I was at the university) so it was not too difficult to achieve a procedure.
My solution used a 2-unknown system and the matrices resources available with the calculator. Unfortunately, the final program does not belong to me and I will not disclose the listing. Anyway, the method I used to compute the unknown coordinate was developed by myself.
I used an HP48G at the time, but depending on how deep you want to go to solve the problem, any of these calculators can be used:
HP15C
HP28S
HP42S
HP48S/SX/G+/GX
HP49G
I do not know the HP39G and the HP40G, but I believe they can also be used. Even other calculators that do not have "resident" resources may be programmed to do so; the ones mentioned above may directly deal with matrices and complex numbers, if needed, without the needing of specific programs.
If you need more details and specific support, e-mail me.
Best regards.
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