Partial list of missing NDArray functionality

[David Bateman]

Looking into missing NDArray functions compared to matlab in 2.1.57
(not including min/max and filter which I've converted) I've compiled
the following partial list 

b = unwrap(a);
b = cplxpair(a);
b = mod(a,2);
b = rem(a,2);
b = airy(a);
b = besselj(1,a);
b = bessely(1,a);
b = besselh(1,a);
b = besseli(1,a);
b = besselk(1,a);
b = betainc(2,a,a);
b = erfinv(a);
b = gammainc(2,a);
b = legendre(0,a);
b = std(a);
b = var(a)
b = median(a);
b = convn(a,a);          % Doesn't exist
b = sort(a);
b = fftshift(a);
b = ifftshift(a);

%% This one might be a bug in matlab...
b = nextpow2(a);

%% Are these really N-D array issues
b = delaunayn(??);       % Doesn't exist
b = interp3(??);         % Doesn't exist
b = interpn(??);         % Doesn't exist
b = griddata3(??);       % Doesn't exist
b = griddatan(??);       % Doesn't exist

Some of these functions are in octave-forge and some aren't strictly
NDArray issues. For example "nextpow2" treats matrix and NDArray args
as "nextpow2(length(x))" in matlab, whereas octave just crashes with
an error if the arg isn't a scalar or a vector. Perhaps we should not
do bug for bug compatiability of this one.

However, most of the functions above are missing NDArray functionality.
There are probably other functions as well. 

Note that this e-mail is not a criticism, as there are an amazing
number of functions already converted to be NDArray aware. But rather
a list of things to do for those that are interested. If you know of
any other functions to convert perhaps you can add them to the list.

Regards
David

-- 
David Bateman                                address@hidden
Motorola CRM                                 +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 1 69 35 77 01 (Fax) 
91193 Gif-Sur-Yvette FRANCE

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