How to match initial index?

Question

Zach Dunagan 2017-10-20

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/362423-how-to-match-initial-index

评论： Zach Dunagan 2017-10-21

采纳的回答： Birdman

在 MATLAB Online 中打开

I am very close to getting the index in Python to match with Matlab.

Here is the output of Python...

0.06 0.058125 0.05625 0.054375 0.0525 0.050625 0.04875 0.046875 0.045 0.043125 0.04125 0.039375 0.0375 0.035625 0.03375 0.031875 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Here is some of the Matlab code...

% clears variables and windows

clc, clear all

% user defined variables

AoA = 10*pi/180;

Uinf = 8.8;

rho = 1.204;

chord = 0.12;

span = chord*2;

thickness = 0.006;

minRad = thickness/2;

majRad = chord/4;

numPanels = 128;

xp = zeros(numPanels, 1)

yp = zeros(numPanels, 1)

% panel coordinates for a finite thickness plate with elliptical leading % edge (nodes)

xStep = chord/(numPanels/2);

xp = chord/2; % 0.06

yp = 0;

k = 1;

while k < numPanels/8

   xp(k) = chord/2 - xStep*k
   yp(k) = -minRad/majRad*(majRad^2-(majRad-xStep*k)^2)^(1/2)
   k = k + 1;

end

Matlab output...

xp'

ans =

In Python the first value is 0.06, the value in Matlab is 0.058125. I need to hold numPanels = 128, don't want to change this to match indexing. In my Matlab code before the first while loop I have xp = chord/2 which is the 0.06, while yp = 0. When placing these outside the while loop will Matlab account those as the initial value at index 1?