Update MarkovProcess.jl

Author: matthieugomez

src/MarkovProcess.jl

@@ -60,19 +60,13 @@ state_space(X::DiffusionProcess) = X.x
     at the border of state space
 """
 function generator(X::DiffusionProcess)
-    n = length(X.x)
-    𝕋 = Tridiagonal(zeros(n-1), zeros(n), zeros(n-1))
-    generator!(𝕋, X.x, X.μx, X.σx)
+    generator(X.x, X.μx, X.σx)
 end
 
 function generator(x::AbstractVector, μx::AbstractVector, σx::AbstractVector)
-    generator!(T, x, μx, σx)
-end
-
-function generator!(𝕋, x::AbstractVector, μx::AbstractVector, σx::AbstractVector)
     # if you use this form, make sure that 𝕋 only has zero
     n = length(x)
-    fill!(𝕋, 0)
+    𝕋 = Tridiagonal(zeros(n-1), zeros(n), zeros(n-1))
     @inbounds for i in 1:n
         Δxp = x[min(i, n-1)+1] - x[min(i, n-1)]
         Δxm = x[max(i-1, 1) + 1] - x[max(i-1, 1)]