Undefined function 'times' for input arguments of type 'cell'

I would like to create a matrix X where the first column is the column of 1s (the intercept), the 2nd column the time covariate (took from the column 1 of matrix M), 3rd column with the group (took from the column 2 of matrix M) and the interaction term of two previous variables (time*group) M{:,1}.*M{:,2} Sorry, but this is my first time with matlab.

Iain 2014-10-9

There's no need for you to apologise. :)

Try the code, look at the answer, decide for yourself if it's working. If it's working, great. If it's not, and you can't figure out how to put it right, ask another question.

请先登录，再进行评论。

Answer 2

g.shaanti 2016-12-15

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/157976-undefined-function-times-for-input-arguments-of-type-cell#answer_247357

Hello, I realize this is an older post, but I would like to put another possibility out there for what can be wrong (and a solution):

This is for if you've ensured that the function you're trying to call both exists and is definitely on your path, but MatLab is still throwing this error (as was the case for me).

The folder containing the function I was trying to run was labelled with slightly unusual characters (so that it would appear at the top of the directory where I needed it).

Folder title: "--> title of folder" (the quotes are not part of the folder title)

I finally got the function to run when I moved it into a folder outside of "--> title...", and it ran without a problem. I have a feeling the "-->" characters in the folder title caused the error, which might be related to how MatLab accesses files when looking for the function you called.

Hopefully this is clear enough to understand and helps as an alternative if someone else runs into this.

2 个评论
显示无隐藏无

NOR AZIEYANI 2018-12-16

在 MATLAB Online 中打开

Hi. I'm trying to understand the above comment. But I still get the same error. Can you checkout this code. Undefined function 'exist' for input arguments of type 'cell'.

wordsstring = regexp(words,'\w+', 'match');
wavdirectory = 'C:\R2013a\bin\Recordings';
[~, number_of_words] = size(wordsstring); %stores number of words in user    
											   % input string                
for m = 1:number_of_words
    filename = [wavdirectory wordsstring{m} '.wav'];
   if(exist(filename, 'file' ~= 0));
   
       filename = [wavdirectory wordsstring{m} '.wav'];
     [y, fs] = audioread(filename); %this tests for Case 1 (base word)
     sound(y, fs);