How to make an input that can randomly produce +1 and -1 for every second?

Hello there,

Just want to know how could I make an input that produces +1 and -1 for every n seconds randomly. Any suggestions for Matlab or Simulink would be appreciated.

Many thanks,

Answer 1

[Andrew Newell]

while true
  randint(1)*2-1
  pause(n)
end

Answer 2

[Sean de Wolski]

 %For a 1x10 vector
 sign(rand(1,10)-.5).*ones(1,10)

Answer 3

[Paulo Silva]

Simulink

|random number (def. set.)|--|gain (10000)|--|saturation (-1 to 1)|-->output