Re: liboctave class specifications

[David Bateman]

Ken Massey wrote:
> I would like to use the liboctave library in my C++ programs, but I
> cannot find an English version of:
>
>   
> http://vision.kuee.kyoto-u.ac.jp/~hiroaki/numerical/octave-headers-html/classes.html
>   
Try

http://octave.sourceforge.net/doxygen/html/index.html


> Specifically, I would like to do something like this:
>
>   #include <octave/oct.h>
>
>   double mydata x[10000];
>   // C++ code to generate data
>   Matrix A = Matrix (100, 100);
>   // copy data from x into A
>   // can I use memcpy, or even better, just set the data() pointer for
> A to point to x ???
>   
double mydata[10000];
Matrix A = Matrix (100, 100);
double *Ap = A.fortran_vec ();
for (octave_idx_type i = 0; i < 10000; i++)
  Ap[i] = mydata[i];


> What is the internal storage mechanism for Octave matrices, i.e. row
> or column major?  
All matrices in Octave are stored in column-major order.

> How about sparse matrices?  
Sparse matrices are in Compressed Column Order. With the needed methods
for the data being, "data", "ridx" and "cidx".

> I would like to be able
> to construct data with C++ and call octave functions to manipulate it,
> similar to the way I may call BLAS or LAPACK functions with pointers
> to the data.
>   
Do you need the interpreter or only liboctave? If you need the
interpreter check the message

http://www.cae.wisc.edu/pipermail/help-octave/2008-April/008713.html

> Any help or info about online documentation/examples would be great.
>   

Also check the manual.. An relatively recent (though not the most recent
version) is available at

http://www.octave.org/doc/interpreter/

and in particular check

http://www.octave.org/doc/interpreter/Dynamically-Linked-Functions.html

D.

> Thanks,
> Kenneth
> _______________________________________________
> Help-octave mailing list
> address@hidden
> https://www.cae.wisc.edu/mailman/listinfo/help-octave
>
>   


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