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+--- Thread: Multiple Curve Fitting Program HP-41 (/thread-9911.html)
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RE: Multiple Curve Fitting Program HP-41 - PedroLeiva - 12-11-2021 12:52 PM
Try this, for HP97, 218 PGRM steps: https://openprairie.sdstate.edu/do/search/?q=Linear%20regression%20analysis%20with%20pocket%20calculator&start=0&context=7231697&facet=
RE: Multiple Curve Fitting Program HP-41 - floppy - 12-11-2021 02:07 PM
(01-12-2018 05:39 AM)Graan Wrote: HelloCan you give us the link to your PDF? Or send it via message?
Just came over the book(pdf): Curve Fitting for Programmable Calculators by William M. Colb. In the book is a multiple curve fitting program for HP-41 that seems interesting. I was thinking to convert it to HP42 code, if possible, and then use it with my DM42. The program is 927 lines however and the pdf is not selectable text so copying the program is not that easy. Guess I could do an OCR.
Anyone has this program in selectable text format?
/Andreas
My idea: perhaps a converting PDF to TEXT processor can extract the lines (I will have to search which one in Linux or Windows), then cleaning up, perhaps we can come to a proper TXT file you can further use and avoid you to make a finger line by line coding.
RE: Multiple Curve Fitting Program HP-41 - Eric Rechlin - 12-11-2021 11:49 PM
(12-11-2021 02:07 PM)floppy Wrote: Can you give us the link to your PDF? Or send it via message?
I don't know about his PDF, but my PDF is probably higher quality (400 dpi 4-bit grayscale):
https://literature.hpcalc.org/items/1516
The OCR is unfortunately far from perfect. The "printer" font tends to give the algorithm problems.
RE: Multiple Curve Fitting Program HP-41 - MNH - 12-12-2021 02:10 AM
(12-11-2021 12:52 PM)PedroLeiva Wrote: Try this, for HP97, 218 PGRM steps: https://openprairie.sdstate.edu/do/search/?q=Linear%20regression%20analysis%20with%20pocket%20calculator&start=0&context=7231697&facet=
Thank you for posting this!
RE: Multiple Curve Fitting Program HP-41 - MNH - 12-12-2021 02:16 AM
(12-11-2021 11:49 PM)Eric Rechlin Wrote: I don't know about his PDF, but my PDF is probably higher quality (400 dpi 4-bit grayscale):
https://literature.hpcalc.org/items/1516
Thank you for posting this!
RE: Multiple Curve Fitting Program HP-41 - Felix Gross - 12-12-2021 01:58 PM
Is this what you are looking for:
https://openprairie.sdstate.edu/cgi/viewcontent.cgi?article=1052&context=agexperimentsta_tb
Felix
RE: Multiple Curve Fitting Program HP-41 - MNH - 12-12-2021 02:28 PM
(12-12-2021 01:58 PM)Felix Gross Wrote: Is this what you are looking for:
https://openprairie.sdstate.edu/cgi/viewcontent.cgi?article=1052&context=agexperimentsta_tb
Felix
Yes. It was already posted. Thanks for your effort, though!