how can fix this problem with matrix ?

How can I create matrix with the size N,m?

How can I copy each array of matrix in a vector and make the modification in it

and the replace again in the matrix?

Example

vector = M (1,:)

after modification of the vector

M(1,:) = vector

But an error appear " Index exceeds matrix dimensions."

[Ted Shultz]

Can you show more of your code. What is in matrix M? is it empty?

[Adam Danz]

"But an error appear " Index exceeds matrix dimensions.""

If you intend to modify a single column of a matrix, you cannot change the number of rows. You can replace some of the existing values with NaN or missing but it must maintain its shape and size if it remains as part of the matrix.

[Mira le]

the size of matrix M is N = 10 and m = 4

M = 1 2 0 3

0 0 3 5

6 4 2 0

.

.

N

vector = M(1,:)

vector = 1 2 0 3

appear the error

[Adam Danz]

vector = M (1,:)

% Somewhere between these two lines your vector is changing in one
% of the following 2 ways:
% 1) it's length is changing 
% 2) it is converted to a column vector instead of a row vector
% 3) an additional row is added to the vector making it a matrix

M(1,:) = vector

Answer 1

[Sai Bhargav Avula]

Hi, May be after modification you vector became a column vector. Try

M(1,:) = vector';

If this doesn't work, provide the value of size(vector).

Hope this helps!