setobs --labels=C:\Users\Pindar\Documents\gretl\GRETL\markers.txt

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

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