how to remove the first 5 characters from a cell array 343x1 cell

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NU_YU 2015-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/251239-how-to-remove-the-first-5-characters-from-a-cell-array-343x1-cell

评论： Leone Campos 2023-1-5

Hello all, I would like to remove the first few characters from every single cell (343), yet I am not much aware of how to do it. I tried to solve the problem via googling it yet could not find anything that would fit my case. The cell array is attached. Example: for "d035-117" for instance i would like to convert it into a form of "117". The first 5 characters need to be truncated. Thanks for your advices and help in advance!

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Jack 2022-12-7

Do you have the answer already, because i don't get it too?

Image Analyst 2022-12-7

@Jack you can see he accepted my answer below so I guess it worked for him.

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Answer 1

Image Analyst 2015-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/251239-how-to-remove-the-first-5-characters-from-a-cell-array-343x1-cell#answer_197479

在 MATLAB Online 中打开

How about (untested)

for k = 1 : length(ca)
    cellContents = ca{k};
    % Truncate and stick back into the cell
    ca{k} = cellContents(6:end);
end

See FAQ: http://matlab.wikia.com/wiki/FAQ#What_is_a_cell_array.3F

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Supriya Gain 2022-5-18

I have a folder which contains 389 CSV files. And each CSV file has a dimension of 82x1. So basically it's a 1D matrix. Now the first element (i.e. A1) of every CSV file is 'VAR'. Now I want to remove this 'VAR' and shift my matrix to the upside. That means I want to remove A1 element and shift the whole matrix from A1. How to do that.

Image Analyst 2022-5-18

在 MATLAB Online 中打开

@Supriya Gain try reading it into a table and deleting the first column

t = readtable(filename);
t = t(:, 2:end)

If that doesn't work, start a new question of your own (not here) and attach one of the CSV files there.

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Answer 2

Jos (10584) 2015-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/251239-how-to-remove-the-first-5-characters-from-a-cell-array-343x1-cell#answer_197482

编辑：Jos (10584) 2015-10-27

在 MATLAB Online 中打开

If A is your cell-array of strings, this oneliner will do the job:

B = cellfun(@(x) x(1:end-5), A, 'un', 0)

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NU_YU 2015-10-27

Hi Jos,

I am not good at in matlab, so i sound dumb for sure. I did what you had suggested and it worked for the first 3 characters, not for the last 3. i substituted it with x(6:9), but it gace me an error. anyhow, thanks! I will try to solve it somehow. much appreciated

Leone Campos 2023-1-5