Generating a Pseudo-random sequence of plus/minus 1 integers

Question

Can anybody help me create a simple pseudo-random sequence of +-1 integers with length 1000 using Matlab?

I.e. a sequence such as

-1 -1 1 1 -1 -1 1 -1 -         


        

Answer 1

Simply user randsrc function.

It will generate random sequences of 1 and -1.

For example

out = randsrc(2,3)

out =

-1    -1    -1
 1    -1     1