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04-19-19, 12:06 PM | #1 |
Neptune's daughter
Join Date: Apr 2007
Posts: 324
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Clever Maths people - I need your help!
This site:
http://46.101.125.20:8080 If you click on WIZARD it describes a Function / Equation that you need to enter to create a nomogram. I'm trying to put together a PDF of a High resolution manoeuvring board in metric, and I need a nomograph for Minutes (0-200) to Metres / Kilometres (0 - 200?) then to Knots. I'm fine with circles and triangles but equations like this and trying to create one that fits the requirement, I have no idea how to do that. Can anyone please help? Thanks |
04-19-19, 03:49 PM | #2 |
Silent Hunter
Join Date: Dec 2004
Location: AN9771
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Seems like template #2 is the most similar to your Speed=Distance/Time. Where the third variable would need to be defined as function 1/z. But I let it generate with default settings (just to see it works) for 7 minutes now and nothing comes out. So I suspect it (or the back end) is buggy.
That's sad, as you found a nice gem in the interwebs with this one.
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My site downloads: https://ricojansen.nl/downloads Last edited by Pisces; 04-19-19 at 04:00 PM. |
04-19-19, 04:05 PM | #3 |
Silent Hunter
Join Date: Dec 2004
Location: AN9771
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Yeah, 20 minutes later still nothing. Loosing the little bit of faith I had left in it just being slow. And I'm usually patient enough. Did you get any result?
There is a Windows installation procedure to let it run on your PC: http://pynomo.org/wiki/index.php/Installation I don't have the time to try it now. Maybe one day later I will try it. Supposedly you should be able to copy the script from the website to a text file and save it with .py extension.
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My site downloads: https://ricojansen.nl/downloads |
04-20-19, 01:19 AM | #4 |
Grey Wolf
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Caveat: I'm no math wiz.
One Yard is 0.9144 meters - so you can pretty much use the yard scale on the existing MB as an estimation of meters (or kilometers) traveled in a given time period. But, I did manage to modify the nomogram to make it slightly more accurate when using meters/kilometers. Try it out and let me know what you think:
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If you have a question about celestial navigation ... ask me! Celestial Navigation Spreadsheet |
04-20-19, 03:40 AM | #5 |
Sailor man
Join Date: Jan 2013
Location: Hong Kong
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Looks great. I guess you just streched the range scale to 1.09361 times the length of the original scale?
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04-20-19, 04:16 AM | #6 |
Grey Wolf
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Thank you.
Actually, I tried scaling it based on the proportions - but that didn't seem to work so well. What I ended up doing was compressing*/repositioning it until various pre-calculated results [mostly] matched up. I must admit, though, that I'm not entirely sure that I got it just right. That's why I'd be very interested in anyone's test results. *Counter intuitively, the distance scale needs to be compressed rather than stretched.
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If you have a question about celestial navigation ... ask me! Celestial Navigation Spreadsheet |
04-20-19, 05:28 AM | #7 | |
Neptune's daughter
Join Date: Apr 2007
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Quote:
Thank you SO much! That's fantastic! |
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