Textscan MULTIPLE DELIM ARRAY and rearrange

How do I import the following .txt file into an array in matlab:

NOTE: The brackets are tripping up my attempts.

.txt file

[ [ 1,2,3,4],[1,2,3,4],[1,2,3,4] ]

matlab output

 4x3 array =

 1 1 1
 2 2 2
 3 3 3
 4 4 4

Note How the original data is groups of COLUMN DATA in sequential row-order in .txt file.

Thanks!

Answer 1

[Stephen23]

This automatically adjusts to the size of the input data. You could easily adapt it to work with either sscanf:

>> S = '[ [ 1,2,3,4],[1,2,3,4],[1,2,3,4] ]'; % use FILEREAD
>> S = strrep(S,' ',''); % get rid of spaces.
>> C = nnz(S=='[')-1;
>> T = nnz(S==',')+1;
>> R = T./C;
>> F = repmat(',%f',1,R);
>> F = sprintf('[%s],',F(2:end));
>> M = sscanf(S(2:end),F,[R,C])
M =
    1    1    1
    2    2    2
    3    3    3
    4    4    4

or with textscan:

>> F = repmat('%f',1,R);
>> C = textscan(S,F, 'MultipleDelimsAsOne',true, 'Delimiter',',[', 'EndOfLine',']');
>> M = [C{:}].'
M =
    1    1    1
    2    2    2
    3    3    3
    4    4    4

[Bish Erbas]

Elegant!

Answer 2

[Bish Erbas]

Just rename untitled.txt. Is this something you were looking for?

% [ [ 1,2,3,4],[1,2,3,4],[1,2,3,4] ]
f = fopen('untitled.txt');
C = textscan(f,'%f','Delimiter','],[','EmptyValue',Inf);
fclose(f);
V = C{:};
V = V(~isinf(V))';
A = reshape(V,4,3)'

Output:

A =

       1     2     3     4
       1     2     3     4
       1     2     3     4