Saving a .mat file in csv format

2022 1 6
1 个回答
更新时间：2022 1 17
13 次查看（30 天）

0 个投票

I have a .mat file and the data structure is as below.
Data =
struct with fields:
axis1: [25626600×1 double]
axis2: [25626600×1 double]
axis3: [25626600×1 double]
datenum: [25626600×1 double]
sample_rate: 30
serial_number: 'MOS2D10171145'
I want this .mat file to be save as a csv file.
I tried this code but it gives me this error.
csvwrite('FileName.csv', Data);
Undefined function 'real' for input arguments of type 'struct'.
Error in dlmwrite (line 189)
str = sprintf('%.*g%+.*gi',precn,real(m(i,j)),precn,imag(m(i,j)));
Error in csvwrite (line 42)
dlmwrite(filename, m, ',', r, c);

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mbvoyager
mbvoyager 2022-1-6
编辑：mbvoyager 2022-1-6
csvwrite does not support to write .mat files or struct type data into a csv file. It only supports numerical matrices.
So Data is a struct consisting of several fields with different data types (vectors, scala and string?) and Data is saved in a .mat file?
Rik
Rik 2022-1-6
How exactly would you like your csv file to be? Can you show an example with 10 elements (instead of the 25626600)?
Rik
Rik 2022-1-17
What exactly did you edit? And how does that answer our questions?

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回答（1 个）

Image Analyst
Image Analyst 2022-1-17

0 个投票

Try creating a double array from your structure:
data = [Data.axis1(:), Data.axis2(:), Data.axis3(:), Data.datenum(:)];
writematrix(data, fullFileName);

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