better density for dense matrices

2017-08-27 18:57:27 +02:00 · 2017-08-27 18:57:27 +02:00 · 151a6ff6da
parent 7fd18e9e57
commit 151a6ff6da
1 changed files with 1 additions and 1 deletions
--- a/src/Orbit-wise.jl
+++ b/src/Orbit-wise.jl
@ -55,7 +55,7 @@ end
 include("OrbitDecomposition.jl")

 dens(M::SparseMatrixCSC) = length(M.nzval)/length(M)
-dens(M::AbstractArray) = sum(abs.(M) .!= 0)/length(M)
+dens(M::AbstractArray) = length(findn(M)[1])/length(M)

 function sparsify{T}(U::AbstractArray{T}, check=true)
    W = deepcopy(U)