MATLAB: Problem in converting a matrix of integers to vector of integers using str2num and num2str

Question

Hello,

I have a matrix x of this form (these are example values)

    1 0 0 1 0
    0 1 0 0 0
    0 0 0 0 1
    1 0 0 1 1

I am trying to make a number out of each row so I used

    y=strcat(num2str(x(:,1)),num2str(x(:,2)),num2str(x(:,3)),num2str(x(:,4)),num2str(x(:,5)));

which get me the result

'10011'
'01000'
'00001'
'10011'

Now I want to convert each string to a number but its not working.

A = str2num(y)
A =
     []

Also, I tried different method all faild beause the size of y is 4×5 and not 4×1.

why does matlab consider each char as column and how can I avoid this problem?

Thanks

Answer 1

Try this

x = [
    1 0 0 1 0
    0 1 0 0 0
    0 0 0 0 1
    1 0 0 1 1];
x = char(x+'0');
y = str2num(x)

Result

>> y
y =
       10010
        1000
           1
       10011

Or a faster solution

x = [
    1 0 0 1 0
    0 1 0 0 0
    0 0 0 0 1
    1 0 0 1 1];
y = x*10.^(size(x,2)-1:-1:0)';