Writing m*n matrix into single array

I want to write m*n matrix into single array

[dpb]

Say what? An matrix is an array ...

If you want to recast 2D as 1D then there's either reshape or the Matlab idiom using the : operator--

x=x(:);        % column vector

will turn any dimension of an array/matrix into a (column) vector. If you want row, then just transpose the result--

x=x(:).';         % row vector

[Abdul Gaffar]

Consider A=[1,1,2;4,3,2;2,3,4]

Now when i use A=A(:), I am getting A=[1,4,2,1,3,3,2,2,4] which is not equal to original A(3*3) matrix

[Walter Roberson]

Yes? You can reshape(A,3,3) to get back the original ?

We do not understand what you are starting with and what you need to end up with ??

[dpb]

All the elements of A(:) are identical to those in the original A; only the shape was changed. The expansion to vector is in column-major order; that is each column is in turn appended to the preceding. This is internal Matlab storage order and an extremely important concept in learning to use the vector facilities within Matlab.

All that occurs is, as Walter notes, a reordering of the apparent shape such that matrix operations can be performed on the matrix according to the laws of matrix algebra or elemental operations on conformant arrays.

Answer 1

[Walter Roberson]

YourMatrix(:)

would give a column vector containing the same elements, if that is what you want ?