How to delete/remove last row from .txt file in a for loop?

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mehtap agirsoy 2021-4-18

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https://ww2.mathworks.cn/matlabcentral/answers/805866-how-to-delete-remove-last-row-from-txt-file-in-a-for-loop

评论： mehtap agirsoy 2021-4-23

Hello all,

I need your help for my class project. I need to add a for loop to my code and delete last row (time and displacement vectors) of the txt file for each iteration.Also, for each iteration I want to store my parameters and get plot. My aim is checking the time, is it long or enough? I've tried some codes and read previous questions but I couldn't fix my code.I'm really got stuck. If you're able to help,I'd be appreciate. Thanks

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Jan 2021-4-20

What does "delete last row of text file" mean? Do you really want to modifiy the file?

What does this mean: "for each iteration I want to store my parameters and get plot"? A plot of what? I do not understand this also: "checking the time, is it long or enough"? How is "enough" defined?

What is the problem with your code?

By the way, source code looks like 1980 with all variables in UPPERCASE.

mehtap agirsoy 2021-4-20

Attached .txt file is result of specimen test. It has time and displacment values. I would like to check the test time (is it too long or not ), therefore in each iteration I want to delete last row/ time value, recalculate the model fit parameters and plot Model vs Time plot.

Meanwhile, I added below codes and able to delete last row, but couldn't create new "demodata.txt" file.

Thanks for response.

DAT(end, :) = [];

delete('demodata.txt');

fprintf('demodata.txt');

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