Trying to take a generated set of values in a matrix and add to it.

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Anas Deiranieh's 2018-1-30

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https://ww2.mathworks.cn/matlabcentral/answers/379674-trying-to-take-a-generated-set-of-values-in-a-matrix-and-add-to-it

评论： Star Strider 2018-1-30

I'm trying to take the values I generate and use them for the next iteration of calculations and add a new column with the results for each iteration. The idea is Resistance. Note since the resistances are the same, the parallel resistance might look weird.

Another problem is that I only get zeros. How can I get those small values to show?

clear all
% CONSTANTS
mu = 18.27E-6; % Viscosity 
x = 8*mu/pi; % Constants 
D = 0.0018; % Branch Diameter in meters
NumPerGen = 1; % Starting at Generation 1
R = D/2; % Branch Radius in m
L = 3*D; % Branch Length in m 3:1 Length/Diameter ratio
for i = 1:24 
   Res = x*L/R^4;
   ParaRes = Res/NumPerGen;
    if i == 1
          A(:,i) = [i,Res,ParaRes,NumPerGen,D,L];
    else
        A(:,i) = [i,Res + A(2,i-1),ParaRes,NumPerGen,D,L];
    end
      D = 0.79*D; % 21% Reduction in diameter
      NumPerGen = 2*NumPerGen; % Doubles with each generation
  end

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Answer 1

Star Strider 2018-1-30

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https://ww2.mathworks.cn/matlabcentral/answers/379674-trying-to-take-a-generated-set-of-values-in-a-matrix-and-add-to-it#answer_302434

Your code runs without error, and while some values of ‘A’ are small, none appear to be zero. (Use format short E rather than format short to see the element values. See the documentation on the format (link) function for details.)

What is it doing that you don’t want it to do, or what is it not doing that you do want it to do?

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Anas Deiranieh's 2018-1-30

buhahaha. . . in trying to shorten the mess I had before and make it more understandable for quicker help, I think I actually fixed it. Didn't realize it until you answered too! But yeah, you definitely answered my next question before I even asked it.

I think now at this point, I just want assistance with adding row labels if at all possible so I can print it out.