MATLAB Answers


How to convert a data Table from .mat to .csv

Asked by Agnese Manzoni on 10 May 2015
Latest activity Commented on by Walter Roberson
on 29 Dec 2017
Let's do an example: I have a file called Pippo.mat To load in matlab I use this function: load('Pippo.mat')
How can I let matlab read Pippo.mat? Thank you.


What's the question exactly?
You want to turn a mat file to csv file?! or ?
Sorry I'm confused
Have a look at
to turn the mat files to csv
on 10 May 2015
Please explain the difference between "load" and "read" and where does the conversion appear?

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2 Answers

Answer by Abhiram Bhanuprakash on 12 May 2015

Hi Agnese,
Guessing from the title of your question, I think you want to load a MAT file into the MATLAB workspace and convert it to a CSV file, which you want to use it for further processing.
If this is the case, you can follow this workflow. Let's say we have a MAT file 'abc.mat' (attached), which contains two matrices and you want to load the two matrices into MATLAB and create a CSV from the concatenated matrix:
%Concatenate matrices A and B
C = [A, B];
%Write CSV file
The created CSV file 'test.csv' is also attached. You can then use 'csvread' if you need to read from the created CSV file. The doc for csvread is here
Hope this helps


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Answer by Ben Salem Youssef on 29 Dec 2017

hello everyone , i have problem with command "load": i have a file that called "Untitled5". and i want to load this file then i could use it and import it and use it for the Machine Learning, but i receive this error : Error using load Number of columns on line 2 of ASCII file Untitled5.m must be the same as previous lines. Any Idea please ?? Thank you


load() loads .mat files and other data files, not m-files. You cannot do
s = load(Untitled5.m');
to run your m-file, you just click the green Run tool button on the toolbar, or type F5 function key.
Read this link then start your own question and attach your .mat file with the paper clip icon.
Can you attach the file?
Your use of .m as an extension hints the file might be MATLAB code, but you would execute MATLAB code instead of load()'ing it.

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