[Gretl-devel] status

[Allin Cottrell]

On Mon, 28 Jan 2008, andreas.rosenblad at ltv.se wrote:

> I think that at least some of feature requests should be 
> targeted before the release of a new version. At least feature 
> requests 1854919 and 1855731, I hope.

Re. 1854919: Resampling rows of a matrix is something you can do 
easily with the existing gretl tools, there's no need for a 
special function.  (We're systematizing the documentation for all 
gretl functions, so hopefully this sort of thing should become 
more apparent.)

For example:

nulldata 5
scalar T = 20   # rows of original matrix
scalar R = 20   # resampled rows: you choose
matrix A = mnormal(T,2)
matrix rsel = int(muniform(R,1)*T+1)
matrix B = A[rsel]
print A B rsel

One small thing: the line "matrix B = A[rsel]" works fine, but it 
might be more transparent if it read

matrix B = A[rsel,]

Unfortunately the latter variant doesn't work in the current 
release because of a stupid copy-n-paste bug in the code for 
parsing matrix sub-slices, but that's fixed in CVS.

Allin.