diff --git a/Orb_AutFN.jl b/Orb_AutFN.jl
index ad414c2..6fbf5cc 100644
--- a/Orb_AutFN.jl
+++ b/Orb_AutFN.jl
@@ -97,10 +97,9 @@ function init_OrbitData(name::String)
    return m, orbData
 end
 
-function transform{T}(U::AbstractArray{T,2}, V::AbstractArray{T,2}, eps=eps(T))
+function transform{T}(U::AbstractArray{T,2}, V::AbstractArray{T,2}, eps=eps(T); sparse=true)
     w = U'*V*U
-   #  sparsify!(w, eps)
-   #  dropzeros!(w)
+    sparse && sparsify!(w, eps)
     return w
 end