datetime with certain number of rows

I have a datetime array with 1000 rows.

I want to extend it to 1200 rows. The last 200 rows should be just a repetition of the last date.

How can I do this?

[Samuele Sandrini]

We can do like this (is a little example):

A=datetime('now')           %i create a variable datetime
A(2:201,1)=A(end,1)

[Peter Perkins]

If you have a (column) vector, even simpler: A(end:(end+200)) = A(end)