Cell2mat conversion

Hi, I have one cell with 256X10 string values...If I want to convert it to matrix of size 256X10(using cell2mat) it contains full of strings....I can't access the matrix elements like matrix(4,5)... How to convert the cell of strings to matrix....Please post your ideas...

Answer 1

[Andrei Bobrov]

 C ={['QRSTUVWXYZ'
'[\]^_`abcd'
'efghijklmn'
'opqrstuvwx']}

out = C{1}(4,5)

ADD

on Harjan's comments

C ={['QRSTUVWXYZ'
'[\]^_`abcd'
'efghijklmn'
'opqrstuvwx']};
C = repmat(C,4,4)
out = C{1,2}(1,1:10)

[harjan]

But I need to store the 15th row of 10 values to a variable and access it how to possible if I use for loop,

for i=1:10

out = C{i,1:10}

end

then it shows error.....How to solve this...

[Walter Roberson]

out = C(i,1:10);

Then access out{1}, out{2}, and so on.

Answer 2

[Walter Roberson]

When you say 256x10 do you mean 256 entries each of which is exactly 10 characters long? And you want to convert to a matrix so as to access the individual characters?

If so, then instead of using cell2mat() use char()

[harjan]

it is 256X10 cell and each cell having 21 char of string...

[Walter Roberson]

Looking at what you have said you want to do, I do not see any reason why you would want to convert the cell array to a matrix.

It appears to me that you just want to take portions of the cell array as a group. You would do that in the way I showed in Andrei's answer: C(i,1:10) would extract down to a 1 x 10 cell array, and you could then access the individual strings if you want to.

[harjan]

sir, my problem is not accessing the values...I need to store it in a variable...after this,the variable contains 1X10 values and it will be used in future...

Answer 3

[Hyetan Lee]

hi harjan.

So, your data type is string now, and it is in the cell matrix(256x10). Am I right?

Then, you can't access it like a variable.

Try this.

------------------------------------------------

test_str = [{'1'} {'2'} {'3'}; {'4'} {'5'} {'6'}; {'7'} {'8'} {'9'}];
% test_str is cell(3x3) matrix with string 1~9

test_char = char(test_str);
% convert to character array first

test_var = str2num(test_char);
% convert to number now

------------------------------------------------

I hope it can help you.

The point is, it's not a cell but string.

[harjan]

Yes It works now thank you