Search found 7 matches

by drafter
Mon Oct 10, 2011 6:30 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Helo Leif,
many thanks.
I thought on something similar. But i am not the crack for nomogramms.
Now the nomogramm looks very nice without the not necessary type 6 crutch.
I don't have further questions :D .
In future i will try to use nomogramms for more applications.

Best Regards
Markus
by drafter
Sat Oct 08, 2011 10:02 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Hello Leif, i just tried out your published code. Many thanks for your support til now. I used the values 5.0,5.0 for r2,r1. The result should be 2.5 (5^2/(5+5)). This is correct in the contour plot type 5. If i choose for epsilon = 0.1 and for l = 1 the result of Q4 should be 0.25 (= 2.5*0.1/1). Wi...
by drafter
Fri Oct 07, 2011 10:30 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Hello, I used the second proposal. I also added a normalized formula for the variable e = epsilon*(r2-r1). I was able to implement the contour type 5. I also tagged the type 5 wd axes with the first type 3 axes. As I wanted to check the results i found a small problem. For the drawed isopleth the va...
by drafter
Tue Oct 04, 2011 12:19 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Hello, after studying the type 9 examples i have made some progress. I have transposed the matrix in order to get r1 and r2 as grid parametres in the second row. | x 0 1| | 0 r1^2/r2^2 1| = 0 | e 1 1| I tried to make a nomogram with this determinant. But i did not have success. The nomogramm should ...
by drafter
Mon Oct 03, 2011 9:47 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Hello, short update. After some problems, i decided to make a series expansion of the old formula. For the interesting point the formula is exactly enough. The new formula is: http://drafter0815.dr.ohost.de/Formula2.jpg What is the best way for the easier formula ? If i use type 9 i would rearrange ...
by drafter
Sun Oct 02, 2011 9:28 am
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Re: Nomogram for 5 variables

Hello Leif, thank you for your answer. :D I checked the solution but i did not get the same result. The trinomial formula has to be extended under the root with "-4 r1^2 r2^2". With that I can not solve the root in the denominator. The main problem still is the sum under the root, i think....
by drafter
Thu Sep 29, 2011 7:55 pm
Forum: Mathematics
Topic: Nomogram for 5 variables
Replies: 12
Views: 64334

Nomogram for 5 variables

Hello everybody, I am a total newbie in nomography. I successfully installed Pynomo. From now on i want to make a nomogram for a developed formula with 5 variables. The formula is: http://drafter0815.dr.ohost.de/Formula.jpg As mentioned i do not have big experience with nomograms. I started with the...

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