Re: [Boost-users] multi_array : using double** from 3rd party lib

I have a 3rd party library which exposes a function that takes a double** data argument. I looked into its source and saw that they use this notation    data[i][j]   with i and j varying from imin to imax and j from jmin to jmax

Now I have  a boost::multi_array marray ... and I wish to pass the "subarray" as a double** argument and call their function. It's not possible, is it?

I do not think it is directly possible without some work. It sounds like you've got pointers-to-pointers a la [1]. You could probably recreate the double** information you need from the subarray, however, and pass that in.

I am actually able to override their function that takes in a double** data.

Can it work then?

Then it will depend a lot on the underlying implementation. - Rhys [1] http://www.fftw.org/fftw3.3alpha_doc/Dynamic-Arrays-in-C_002dThe-Wrong-Way.h...