Matlab拆分字符串多个分隔符

Question

I have a cell list of strings like this:

cellArr = 
      'folderName_fileName_no.jpg',
      'folderName2_fileName2_no2.jpg'

I want to get it like this

{folderName, fileName, no},
{folderName2, fileName2, no2}

How to do it in matlab? I know I can use

regexp(cellArr, '_', 'split'), 

but how can I use more than one delimiters?

Answer 1

我找到了..谢谢你的回复..

regexp(cellArr, '[_.]', 'split')

Answer 2

It is very similar to the C method of string tokenization. Using strtok , you can tokenize based on whichever delimiter you choose ( in your case '_' )

STRTOK reference

Note, you will use the C idiom of repeatedly calling strtok in a loop on its remaining string as it returns only the first token each time. An example is given in the reference.

To answer your EDIT:

Using strtok on a cell array of strings returns a cell array of strings in token and a character array in remain:

s = {'all in good time'; ...
 'my dog has fleas'; ...
 'leave no stone unturned'};

remain = s;

for k = 1:4
   [token, remain] = strtok(remain);
   token
end

straight from example 3 in the reference. < To make it quite obvious, you just replace strtok(remain) with strtok(remain,REQUIRED_DELIMITERS) and add trivial logic to drop the file extension.

Answer 3

It also useful to do using strsplit :

cellArr = 
      'folderName_fileName_no.jpg',
      'folderName2_fileName2_no2.jpg'

C = strsplit(cellArr,'_')

Then C is a cell array containing the three vectors. Also there is filepath if it's needed to remove parts not necessary, like extensions. strsplit can also be used with Regex if it needs to!