Search found 10 matches

by kloekwil
Wed Feb 04, 2015 6:22 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

You are really making me curious :roll: Already thanks in advance for putting the effort in this Probably the B0 variable en the OG variable will be on the same axis parallel to the ADF axis whereas both the B1 and FG axis are curves of one of them is curved. For your information the physical story ...
by kloekwil
Sun Feb 01, 2015 4:01 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

... Hey, how do you get the images to show up in this? Just by adding: " [_img]http://i.imgur.com/DQvK14L.jpg [_/img] (remove underscores) that yields http://i.imgur.com/DQvK14L.jpg When trying to align the og-line with the B0 line the og line ends up somewhere below the B1-line... Hmm, it's e...
by kloekwil
Thu Jan 29, 2015 7:03 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

Sorry to have missed all the excitement. I'll try to have a look to see what I can do with B1. An ADF/OG/FG one can be done with 3 parallel scales, which means you could do it with a "slide rule" device. (You may not be able to get all 5 variables on a single scale.) Welcome back Glen :D ...
by kloekwil
Thu Jan 08, 2015 6:50 am
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

I think the problem lies in making a block of the B0_params which is part of the type-9 nomogram and the OG_params which is part of the type-8 nomogram. They are coupled by the tag "start" and the function and align function. In the OG_params i doubt about the 'function" since it look...
by kloekwil
Tue Jan 06, 2015 8:14 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

The OG/B0 scale issue is straightforward. Just align it with B0_params, the rest of the nomogram will take care of itself. The B1 scale is more difficult - but not insurmountable. Without getting stuck into the algebra, I'd suggest the following approach. Thanks for your reaction Jason! The OG/B0 s...
by kloekwil
Sun Jan 04, 2015 3:41 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

As a next step I will try to add the OG-scale which runs parallel to the B0-scale. I run into a problem for which I cannot find a solution in the examples. I want to align the B0-line from the type-9 nomogram dervied above with an alternative OG-line which is a simple function of B0 (OG=(259/(259-B...
by kloekwil
Fri Jan 02, 2015 9:46 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

Indeed, it is very easy to have a nomogram automatically scaled with PyNomo, specially when one uses the polygon option. Initially I perfomed the projection scaling by adding this to determinant and that yielded the same result as posted before. Then I used the polygon-option in Pynome starting with...
by kloekwil
Wed Dec 31, 2014 10:47 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

... and the article about transformations on the Dead Reckoning site lead me to the following nomogram. I used the projection point technique. The data were generated in excel. It gave the best results for xp=0,17, yp=0,17 and zp did not have a large effect on the nomogram. The B0-line could have so...
by kloekwil
Wed Dec 31, 2014 6:28 pm
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

Re: scaling of a N/Z type nomogram

Hi Jason, Thanks for you reply. I hope your post has not prevented you to catch the boat :D Although nomograms are new to me and math classes seem history I would first like to know what I am doing, so I prefer the long way (but I enjoy doing it). There will always be time for the short answer. The ...
by kloekwil
Tue Dec 30, 2014 9:45 am
Forum: Mathematics
Topic: scaling of a N/Z type nomogram
Replies: 18
Views: 18783

scaling of a N/Z type nomogram

I got interested in nomograms because of its simplicity to do calculations while not having a pc etc at hand. It appears to be useful for my beer brewing hobby. In short : When brewing beer one starts with a sugary solution with a certain Original Gravity (OG). Yeast ferments the sugars leading to a...

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