delete data of csv file
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SINDU GOKULAPATI
on 24 Mar 2021
Edited: SINDU GOKULAPATI
on 16 May 2021
i have created a code such that data is appended to csv file every time the loop runs
but when i run the program again the new data is added with the old one
but i want to clear out the data in then csvfile before hand
what command do i use
delete('xyz.csv') deletes the whole file
4 Comments
Merve Buyukbas
on 24 Mar 2021
But you shouldn't count on the main directory and instead use full paths everywhere in your script. This way the data can be located anywhere independently on where the code is.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/560443/image.jpeg)
Accepted Answer
Walter Roberson
on 24 Mar 2021
fclose(fopen('xyz.csv', 'w'));
When you open a file for writing with 'w' access, the existing content is discarded.
Note: the POSIX standard library specifies truncate() and ftruncate() functions that would be a closer match. However, MATLAB does not implement either of those.
6 Comments
Walter Roberson
on 12 May 2021
csvread() calls dlmread() with delimiter ','
You are writing to a file that is not necesarily in the same place as you are reading from, as your current directory is not necessarily D:\sem6\PROJECT
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