[Gretl-devel] Belated response to Sven on function packages

[Allin Cottrell]

On Sat, 28 Apr 2007, Sven Schreiber wrote:

> The one that is missing is py4gretl_vecdecomp, because I found 
> out that gretl seems to have a 4KB line length limit (regarding 
> script files invoked with the "run" command) -- which is 
> understandable, but sometimes breaks the (admittedly) clumsy way 
> how py4gretl_vecdecomp passes the calculated time series from 
> Numpy back to gretl in a temporary text file. Would that 
> limitation be easy to lift, or should I think of a way to work 
> around that?

In the context of saving a "session", if there are any saved 
matrices gretl writes out a file called matrices.xml, which is 
then re-loaded when the session is reopened.

I've now added this: you can load such a matrix file, 
independently of the session mechanism, using the "include" 
command.  So, if I'm understanding the issue correctly, you should 
be able to get the relevant data into gretl without super-long 
command lines: get python to write out a matrices file then ask 
gretl to "include" it.  Here's an example of the format for such a 
file:

<?xml version="1.0" encoding="UTF-8"?>
<gretl-matrices count="2">
<gretl-matrix name="A" rows="3" cols="3">
1 0 0 
0 1 0 
0 0 1 
</gretl-matrix>
<gretl-matrix name="B" rows="2" cols="4">
1 2 3 4
4 3 2 1
</gretl-matrix>
</gretl-matrices>

Allin.