[Gretl-users] Question about "for" loop

Dear all, Recently I've encountered the following behaviour while running the following script (Allin, you maybe recognize that this is a slightly modified version of the script you provided in one of the previous messages): -------------- Start script --------------------------------------------- # Select full sample smpl full # start a loop in which for each loop a different, # successive month is selected, going from Jan 1981 till Dec 2007 loop j=1981:01..2007:12 # Select a sample of 1 month smpl $j $j list OKstocks = null # For each stock in each year, check whether the # following conditions are fulfilled loop foreach i AALBERTS..ZEELAND_ n = sum(ok($i)) if n==1 OKstocks = OKstocks $i endif endloop if nelem(OKstocks) > 0 smpl $j # save each valid stock to a database, with name reflecting # the year of the check store --csv "/tmp/04042011/some_name_$j.csv" OKstocks --omit-obs endif endloop ---------------- End script -------------------------------------------- Basically each time a single month is supposed to be selected, starting from January 1981, however, when I look at the output of the script, I see the following: --------------- Start output --------------------------------------------- loop: j = 1981:01 ? smpl 1981:02 1981:02 Full data range: 1981:01 - 2007:12 (n = 324) Current sample: 1981:02 - 1981:02 (n = 1) : : : store: using filename /tmp/04042011/some_name_1981:02.csv Data written OK. loop: j = 1981:02 ------------------ End output ------------------------------------------- My question is why does it start from Feb 1981 instead of Jan 1981? This creates a problem with the last observation: ---------- Start output ----------------------- ? smpl 2008:01 2008:01 Observation number out of bounds error in new starting obs ----------- End output ------------------------ While, in fact, this should be the observation for Dec 2007. Also, if you look at the bottom of the script, the argument "--omit-obs" is placed after the name of the file, because if I put it after "store --csv" it flags an error: field '"' in command is invalid I use gretl version 1.9.3 on Ubuntu (10.10). Thank you in advance for your help and for creating a great piece of software. --------------------------------------- Sergey