Find strings from an cell array and create a new cell array

Question

I want to find the strings from an cell array (m x n) and add those identified strings in new cell array (m x n), by using matlab, for example:

Human(i,1)={0
1
34
eyes_two
55
33
ears_two
nose_one
mouth_one
631
49
Tounge_one}

I want to remove the numbers and have just strings

New_Human(i,1)={eyes_two
ears_two
nose_one
mouth_one
tounge_one}

jodag · Accepted Answer · 2016-11-14 16:08:14Z

1

Based on your comment it sounds like all your data is being stored as strings. In that case you can use the following method to remove all strings which represent a valid number.

H = {'0'; '1'; '34'; 'eyes_two'; '55'; '33'; 'ears_two'; 'nose_one'; 'mouth_one'; '631'; '49'; 'Tounge_one'};

idx = cellfun(@(x)isnan(str2double(x)), H);
Hstr = H(idx)

Output

Hstr = 
    'eyes_two'
    'ears_two'
    'nose_one'
    'mouth_one'
    'Tounge_one'

The code determines which strings do not represent valid numeric values. This is accomplished by checking if the str2double function returns a NaN result on each string. If you want to understand more about how this works I suggest you read the documentation on cellfun.

edited Nov 14, 2016 at 16:08

answered Nov 14, 2016 at 8:33

jodag

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2 Comments

Mohammed Nadaf Over a year ago

Hi @jodag, thanks for suggesting the method, but for some reason in my script, idx is taking numbers and characters (Parameter values) as '1', hence Hstr is same as H

jodag Over a year ago

@Mohammed Nadaf I updated the answer based on your comment.

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