add vector to an existing matrix

hi,

I have the follogin problem: I have a matrix cosisting of 8 columns and 19599 rows and I would first generate a column vector with 19599 elements and add this to the existing matrix. I tired the following:

data9= zeros(size(data8,1),9);  
data9(:,1:8) = data8;

where data 8 is the existing matrix with 8 columns and I am intending to create a nineth column which can be fillled.

than I create the clumn vector called moneyness which is a double vecotr

and then I did

data9(i,9) = moneyness;

unfortunately, this gives me the following error message:

Subscripted assignment dimension mismatch.

Error in construct_data (line 36) data9(i,9) = moneyness;

IS there anybody who can help me?

Answer 1

[James Tursa]

Did you mean this?

data9(:,9) = moneyness;

Another way to do it:

data9 = [data8 moneyness];

[Locks]

perfect, thanks

[Maria-Augusta Miceli]

Perfect, great!

Answer 2

[Susan]

data9 = zeros(size(data8,1),1);
data9 = [data8,data9];

This will concatenate the variables together, giving you a 19599 x 9 matrix.