zero padding column of data

How do I extend an existing matrix (200x1 double) with a specific number of zeros? i.e. pad the end of the column

Answer 1

[Perry Robertson]

Solution with calculation of zeros to add:

v = rand(200, 1);          % original
finalSize = 400;           % the size needed
Nz = finalSize - numel(v); % number zeros needed
v = [v; zeros(Nz,1)];      % vector with zero padding

Answer 2

[James Tursa]

n = number of elements to pad with 0's
x = your 200 x 1 double array
x(end+1:end+n) = 0;

Answer 3

[Star Strider]

Probably the easiest way:

v = rand(200, 1);                   % Original Vector
Nz = 10;                            % Number Of Zeros To Pad
v = [v; zeros(Nz,1)];               % Zero-Padded Vector