On Thu, 3 Feb 2011, Leon Unger wrote:
> Am 31.01.2011 21:43, schrieb Allin Cottrell:
> > string Q = "SELECT country,year,y FROM FooBase"
> > data y obs-format="%s:%d" query=Q --odbc
> >
> > This should work if the "country" variable contains string
> > country-codes such as "FRA", "GER", etc., and the year variable
> > contains years as integers:
> >
> > GER:1990 123.5
> > GER:1991 127.6
> >
> > This assumes that the pre-existing gretl dataset has observation
> > strings on the pattern shown above.
>
> I created an empty panel dataset with appropriate obs:time
> combinations and then used the GUI to read in the oberservation
> markers from a txt file. I know how to create the 'normal' empty
> panel via script, but how can I get the markers directly from
> script?
Well, you could do something like this:
<script>
scalar N = 3
scalar T = 10
scalar yr0 = 1990
string s1 = "FRA"
string s2 = "GER"
string s3 = "GBR"
set echo off
outfile markers.txt --write
loop i=1..N --quiet
loop j=1..T --quiet
printf "%s:%d\n", s$i, yr0+j-1
endloop
endloop
outfile --close
</script>
That will give you a file containing the observation markers. You
can add these to a dataset using the GUI ( /Data/Observation
markers ), or, if you use the latest snapshot from
http://gretl.sourceforge.net/win32/ , you can add the markers
via script using a new option to "setobs", as in
<script continues>
scalar NT = N*T
nulldata NT --preserve
setobs T 1:01 --stacked-time-series
setobs --labels=markers.txt
</script>
Allin Cottrell
