&Variable_Name
$Variable_Name
Use either a &
or $
sign in front of a variable name to create a reference to that variable's steady-state level in transition or measurement equations. The two signs, &
and $
, are interchangeable.
The steady-state reference will be replaced
with the variable itself at the time model's steady state is being calculated, i.e. when calling the function sstate
;
with the actually assigned steady-state value at the time the model is being solved, i.e. when calling the function 'solve''.
x = rho*x{-1} + (1-rho)*&x + epsilon_x !! x = 1;