MATLAB: How many elements in one row matrix

matrix array

I like to know how many elements of one-row matrix.///

EX: V = [ 2 3 4 8 6 4 7 9 ], the answer is 8 wich the number of elements in one row.////

Thank you

Best Answer

size(V,2)

is specifically the number of columns in V, even if V is multi-dimensional.

In the case where you know V is a vector, then length(V) can be used, provided that you want a column vector with 8 elements to return the same as a row vector with 8 elements would.

Related Solutions

MATLAB: How to change one row vector into many row vector matrix

V = rand(1,12096);
S1 = [24,24,6];
A1 = reshape(V(1:prod(S1)),S1); % size 24x24x6
S2 = [24,36,10];
A2 = reshape(V(prod(S1)+1:end),S2); % size 24x36x10

You can easily access the pages of the matrices using indexing, e.g.:

A1(:,:,1) % the first matrix of A1

MATLAB: How to create a matrix of N columns formed by just one vector

for a row vector concatenated vertically:

 A=repmat(vector,[1000 1]);

for a column vector concatenated horizontally:

 A=repmat(vector,[1 1000]);

Best Answer

Related Solutions

MATLAB: How to change one row vector into many row vector matrix

MATLAB: How to create a matrix of N columns formed by just one vector

Related Question