I finally managed to use tauchen function. However, the type of outcome is Discrete Markov Chain stochastic matrix of type Array{Float64,2}:

I tried to multiply a scalar, a vector, or any kind of algebra on it, but Julia returns

MethodError: no method matching length(::MarkovChain{Float64,Array{Float64,2},StepRangeLen{Float64,Base.TwicePrecision{Float64},Base.TwicePrecision{Float64}}})

Is there any way that I can convert the outcome of tauchen as a normal matrix so that I can do some multiplication?

Thank you