[Gretl-devel] gretl <-> R interaction

Hi everyone, last week, Allin and I worked on better integration with R, and it would be very helpful if some of you guys could test a new feature, which is available in the current CVS version and/or the windows snapshot: you can now edit R sources and have R execute them, with the data in your current gretl session auto-loaded for you. An example will probably clarify: 1) load the "data4-1.gdt" example file 2) run an OLS regression of "price" on the other 3 variables: you should get something like const 129.062 88.3033 1.462 0.17456 sqft 0.154800 0.0319404 4.847 0.00067 *** bedrms -21.5875 27.0293 -0.799 0.44304 baths -12.1928 43.2500 -0.282 0.78376 3) now open Files > Script files > New and choose "R script" 4) an edit window should open: write the following R commands: mod1 <- lm(price ~ sqft+bedrms+baths) summary(mod1) 5) click on the gears icon and choose "Non interactive" 6) after a few moments, an output window should open with the results, among which: Estimate Std. Error t value Pr(>|t|) (Intercept) 129.06163 88.30326 1.462 0.174559 sqft 0.15480 0.03194 4.847 0.000675 *** bedrms -21.58752 27.02933 -0.799 0.443037 baths -12.19276 43.25000 -0.282 0.783758 (Hey, the same numbers! Amazing!) IMHO, this mechanism (if working properly) will be very beneficial to gretl _and_ R users. However, it is not very well tested, and anything can happen (crashes, data losses, kittens being eaten, your house on fire). So, I'd like to invite anyone who has even a marginal interest in R to give this new feature a good run, so we can debug it properly before the next release. Thanks. Riccardo (Jack) Lucchetti Dipartimento di Economia Università Politecnica delle Marche r.lucchetti(a)univpm.it http://www.econ.univpm.it/lucchetti