[Gretl-devel] status

[Allin Cottrell]

On Tue, 29 Jan 2008, andreas.rosenblad at ltv.se wrote:

> However, I still think it should be included natively in gretl 
> by extending the resample() command so that it can be used with 
> mxn matrices too. It would be easier, more natural and less 
> error-prone to use B = resample(A) instead of writing special 
> code every time.

But B = resample(A) won't do the job you were asking for; you'd 
need at least one additional parameter, perhaps mpre.

The actual "active ingredient" in what I posted is just a 
one-liner,

  matrix B = A[int(muniform(R,1)*T+1)]

and this is very flexible since you can vary independently the 
number of draws (R) and the number of rows of A to draw from (T).

In fact, you don't even need the "int()", that is implicit:

  matrix B = A[muniform(R,1)*T+1]

I don't really see this as "writing special code".

This could be put in the "cheatsheet" chapter of the User's Guide.

All the same, I'll take a look at how easy it would be to extend 
"resample" (in its simple form) for matrices.

Allin.