On Mar 17, 2011, at 9:27 PM, Jimin Park wrote: > Could somebody please give me some help? > I tried putting > > stat.file = $out.stat > > line in the params file, to see if it makes any difference, but no > luck there. > There is only one out.stat file in ecj's root folder and this never > gets changed. > When I run the tutorial, is it supposed to create a new out.stat > file somewhere? > I would like to see the results of my GP in a tree like form visually. It's got to be there somewhere, not sure where your IDE is hiding it. Instead of $out.stat, you might try an explicit path. For example, if you're on a Mac, you might try stat.file = /Users/jimin/Desktop/out.stat (or something like that) Or if you're on Windows you might try something like: stat.file = c:\documents and settings\jimin\desktop\out.stat (or maybe...) stat.file = c:/documents and settings/jimin/desktop/out.stat (I'm not sure how Java interacts with paths in Windows) Also your file doesn't have to be named out.stat, so you could try: stat.file = $my.file And then search for "my.file" on your hard drive. > I tried to print the result in C-ish format like in the tutorial. > I got the following error. > > Parameter no longer used. See GPTree.java for details. > PARAMETER: pop.subpop.0.species.ind.tree.0.c > ALSO: gp.tree.c > SYSTEM EXITING FROM ERRORS > > Just thought I should put it up. > Maybe the tutorial is out of date and doesn't work > with the new ECJ version? Thanks, I'll check the tutorial. The parameter has now changed to: pop.subpop.0.species.ind.tree.0.print-style=c There are two options you can try also: pop.subpop.0.species.ind.tree.0.c-operators=false pop.subpop.0.species.ind.tree.0.c-variables=false The tutorial should work just fine still; though it's true the current version has made a bunch of improvements.