Storing calculated values from a for-loop and plotting.

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Farez Redzuan 2021-6-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/866980-storing-calculated-values-from-a-for-loop-and-plotting

评论： Farez Redzuan 2021-6-30

I would like to simulate an equation and plot a graph from the calculated values, but I'm not sure how to proceed to store the values of each iteration in the for-loop.

Any tips would be appreciated.

k = -1.9;
R = -1.6;
for r = 0.00 : 0.10 : 1.60
    fr = r/R;
    squrt = 1 - ((1 + k)* fr^2);
    z = ((r^2)/R)/(1 + sqrt(squrt));
    
%     from this point on I'm not sure how to proceed. how do i store each
%     value into a matrix?
end

Thank you in advance.

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Answer 1

Asmit Singh 2021-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/866980-storing-calculated-values-from-a-for-loop-and-plotting#answer_735075

编辑：Asmit Singh 2021-6-28

在 MATLAB Online 中打开

Hey You can refer to the plotting documentation. Considering you needed a z vs r graph, heres the code and the plot. Hope this helps.

k = -1.9;
R = -1.6;
for r = 0.00 : 0.10 : 1.60
    fr = r/R;
    squrt = 1 - ((1 + k)* fr^2);
    z = ((r^2)/R)/(1 + sqrt(squrt));
    
    %plotting 
    plot(r,z,'.');
    hold on
end