[julia-users] Problems about translating Matlab codes into Julia

[Changan Liu]

I meet problems about translating my matrix computation codes from Matlab 
to Julia.

Here is the example :

In Matlab :

A1=[0 2 3;4 0 6;7 8 0];
B=A1(A1(:,1)~=0,1)
C=A1(1,A1(1,:)~=0)

We can get :

B =

     4
     7

C =

     2     3


In Julia :

A1=[0 2 3;4 0 6;7 8 0]
A1[A1[:,1].!= 0,1]

we can get : 

2-element Array{Int64,1}:
 4
 7

However, in Julia :

A1[1,A1[1,:].!=0]

It will show the error :

`getindex` has no method matching getindex(::Array{Int64,2}, ::Int64, 
::BitArray{2})


Could anyone help me to point out the problems and how to fix it, please? 
Thank you!