How do you get the singular value decomposition of a matrix in Narray
into a [u,x,v] triple of matrices?  Then I want to grab the first
column of u (u(:,1) in matlab).

I am also interested in stacking a bunch of data matrices with various
lags:

c = column dimension of m
stacked_m = [m(:, 1:c-2); m(:, 2:c-1); m(:,3:c)]

Finally, just for grins, I want to assign 1 to all the elements of a
matrix if which are less than 1:

m(m<1) = 1

I think there is a *lot* of work, in various bits and pieces.  (And I
don't write Japanese, unfortunately.)  However, it seems to be all over
the place.  (I was never very fond of the CPAN haphazard approach to
"library" development.)

I don't want to complain--I would be quite happy to help with a
project.  I just think we need a push to come up with a use-case based
integration of all the tools, like scipy in Python (really like scipy +
matplotlib), all in one coherent package.