Re: [julia-users] The multi-dispach is dispaching me

2014-03-13 Thread Jeff Bezanson
An Array is not compatible with a julia method expecting a Ptr; it can only be passed to a ccall that expects a Ptr. In julia Array and Ptr are just different types. I would recommend not writing julia methods with ::Ptr arguments. Another reason is that if you pass Ptrs around too much you risk hi

Re: [julia-users] The multi-dispach is dispaching me

2014-03-10 Thread J Luis
Still doesn't work but getting closer julia> using GMT; API=create_session(); dim=uint64([2,9]); julia> V = create_data (API, 5, 1, 0) Ptr{Void} @0x julia> V = create_data (API, 5, 1, 0, dim) ERROR: no method create_data(Ptr{None}, Int64, Int64, Int64, Array{Uint64,1 }) so its t

Re: [julia-users] The multi-dispach is dispaching me

2014-03-10 Thread Leah Hanson
I think Jacob was suggesting something like this: function create_data(API::Ptr{None}, family=5, geometry=1, mode=0, par::Ptr=C_NULL, wesn::Ptr=C_NULL, inc::Ptr=C_NULL, reg=0, pad=2, data::Ptr{None}=C_NULL) Have you tried that? (The Ptr types are loosened by removing the type parameter).

Re: [julia-users] The multi-dispach is dispaching me

2014-03-10 Thread J Luis
Thanks, but if I try without default values function create_data(API::Ptr{None}, family, geometry, mode, par::Ptr{ Culonglong}, wesn::Ptr{Cdouble}, inc::Ptr{Cdouble}, reg, pad, data::Ptr{None}) I still get the same error, and note that the Culonglong was not using the C_NULL default valu

Re: [julia-users] The multi-dispach is dispaching me

2014-03-10 Thread Jacob Quinn
Not sure, but my guess would be that C_NULL is not being accepted as a Ptr{Culonglong} or Ptr{Cdouble} since it's type is Ptr{Void} (or Ptr{None}). You can either remove those type annotations or just use Ptr as the type annotation to test this theory. -Jacob On Mon, Mar 10, 2014 at 8:20 PM, J L

[julia-users] The multi-dispach is dispaching me

2014-03-10 Thread J Luis
I have spend some hours around this but I'm not getting nowhere. The following C function has this signature void *GMT_Create_Data (void *API, unsigned int family, unsigned int geometry , unsigned int mode, uint64_t par[], double *wesn, double *inc,