Re: [Gretl-users] dummify with list and script output window

On Fri, 15 Feb 2013, Pindar wrote: > in terms of the bundle problem I was not concrete enough. > I'm using the current snapshot and still get a crash with: > > <hansl> > bundle b = null > b["foo"] = 1 > # open bundle via gui in symbol window > bundle b = null > # close bundle via gui -> crash > <hansl> OK, now I see what you mean. Fixed in CVS. > I have another question concerning loops: I want to use the @ functionality > for changing the looped through lists. > This is not working as expected. I need it for e.g. trivariate interaction: > > <hansl> > open chard.gdt > > loop for i=2..4 -q > string listName = "inter$i" > list @listName = null > endloop > > inter2 = 1 > inter3 = 3 4 > inter4 = 5 > > loop for i=2..4 -q > string listName = "inter$i" > loop foreach j @listName -q > print j > print "$j" > eval varname(@listName) > endloop > endloop > <hansl> This is a rather tricksy use of double string substitution: when the inner loop is set up is hard for gretl to know what "@listName" is, or will be. However, if we guess it ought to evaluate to a string that gives the name of a list, then things will go as you intend in this case. The following now works in CVS: <hansl> open data4-10.gdt list L1 = 1 list L2 = 3 4 list L3 = 5 loop i=1..3 -q string listName = "L$i" printf "i = %d: listName = '%s'\n", i, listName loop foreach j @listName -q printf " j = %d and dollar-j = '$j'\n", j endloop endloop </hansl> Allin Cottrell _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users