[Numpy-discussion] Array views

Pearu Peterson pearu.peterson@gmail....
Tue Mar 29 00:13:43 CDT 2011


On Mon, Mar 28, 2011 at 10:44 PM, Sturla Molden <sturla@molden.no> wrote:

> Den 28.03.2011 19:12, skrev Pearu Peterson:
> >
> > FYI, f2py in numpy 1.6.x supports also assumed shape arrays.
>
> How did you do that? Chasm-interop, C bindings from F03, or marshalling
> through explicit-shape?
>

The latter.
 Basically, if you have

subroutine foo(a)
real a(:)
end

then f2py automatically creates a wrapper subroutine

subroutine wrapfoo(a, n)
real a(n)
integer n
!f2py intent(in) :: a
!f2py intent(hide) :: n = shape(a,0)
interface
subroutine foo(a)
real a(:)
end
end interface
call foo(a)
end

that can be wrapped with f2py in ordinary way.


> Can f2py pass strided memory from NumPy to Fortran?
>
>
No. I haven't thought about it.

Pearu
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