Check if built-in functions have been edited and return to defaults

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Ana Alonso 2019-5-20

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https://ww2.mathworks.cn/matlabcentral/answers/463151-check-if-built-in-functions-have-been-edited-and-return-to-defaults

评论： Rik 2019-5-20

I'm worried that I've accidentally edited the script for a built-in function. I'm trying to use the pentropy function from the Signals Processing package and the error I'm getting makes no sense. I tried entering the basic example listed on the MATLAB documentation page and now that's giving me the same error.

>> xn = randn(1000,1);
>> fs = 10;
>> ts = 1/fs;
>> t = 0.1:ts:100;
>> tdur = seconds(t);
>> xt = timetable(tdur',xn);
>> pentropy(xt)
Error using pentropy (line 151)
Error: File: rms.m Line: 2 Column: 14
Invalid use of operator.