Accessing data inside a cell array using a loop

Question

Nikesh Maharjan 2022-10-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1817025-accessing-data-inside-a-cell-array-using-a-loop

评论： Nikesh Maharjan 2022-10-5

Here "data" is a cell array of size 48 x 1. Each position of the cell consists N X 2 size matrix. I want to access the data in cell and plot column 1 vs column 2 of matrix inside each cell as given by input. For e.g. If input Z=[1 2 5], I want to plot col1 vs col2 of data{1}, data{2} and data{5}.

```Z = input('input the test number\n ');

for ii = 1:length(N)

sigma(ii) = data{Z(ii)}(:,1);

delf(ii) = data{Z(ii)}(:,2);

hold on

print(sigma(ii),del(ii))

hold off

end

```

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Angelo Yeo 2022-10-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1817025-accessing-data-inside-a-cell-array-using-a-loop#answer_1066215

编辑：Angelo Yeo 2022-10-4

在 MATLAB Online 中打开

Woud this be working for you?

% Z = input('input the test number\n   ');
Z=[1,2,5]; N = 10;
data = cell(48,1);
for i = 1:48
    data{i} = rand(N,2);
end
for ii = 1:length(Z)
    sigma(:, ii) = data{Z(ii)}(:,1);
    delf(:, ii) = data{Z(ii)}(:,2);
    
    figure;
    plot([sigma(:, ii),delf(:, ii)]);
    
end

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Nikesh Maharjan 2022-10-5

Hi, Angelo.

Thnx for the response.Really appreciate it. However I'm still getting an error message like

```Conversion to cell from double is not possible.

Error in untitled (line 8)

sigma(:, ii) = data{Z(ii)}(:,1);```.

I think there's something about converting from cell to double and vice versa that I don't understand. Would really appreciate if you helped me in this. Thank you

请先登录，再进行评论。