How to read complex number from a *.csv file?

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Ngoc 2013-12-5

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https://ww2.mathworks.cn/matlabcentral/answers/108787-how-to-read-complex-number-from-a-csv-file

评论： sixwwwwww 2013-12-5

Hi,

I have to import a data set from a csv file but I cannot find any way to import the complex number from the file to Matlab to do the data processing. I try to search on the internet but no solutions are helpful. I tried importdata, csvread, textread,... but they didn't work. Can anyone show me how to solve this problem? I attached part of my csv file below. I really need help. Thanks

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回答（2 个）

sixwwwwww 2013-12-5

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https://ww2.mathworks.cn/matlabcentral/answers/108787-how-to-read-complex-number-from-a-csv-file#answer_117389

在 MATLAB Online 中打开

you can do it as follows:

[num, str, raw] = xlsread('filename.csv');
a = str2num(cell2mat(raw));

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Ngoc 2013-12-5

complex.csv

Here it is. This is only a small part that I cut from the file, which is too large to upload here.

sixwwwwww 2013-12-5

在 MATLAB Online 中打开

Use the following code on your data. It will work fine. I checked it for your sample data:

[num, str, raw] = xlsread('filename.csv');
rawval = double(cellfun(@(x) ~isnumeric(x), raw));
a = zeros(size(raw));
b = a;
a(rawval == 0) = cell2mat(raw(rawval == 0));
b(rawval == 1) = str2double(raw(rawval == 1));
Matrix = a + b;

I hope it helps. Good luck!

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