On Fri, 13 Jun 2008, andreas.rosenblad(a)ltv.se wrote:
cottrell(a)wfu.edu @ INTERNET skrev 2008-06-11 15:55:14 :
> Unless anyone has any show-stopping problems to report, I plan to
> release gretl 1.7.5 tomorrow, after doing an OS X build tonight.
I think it looks great. Some comments:
1. The normtest command should be accessible also from the GUI.
E.g. Variable > Normality test
Yes, that is planned, but I didn't want to introduce yet another
new string for translation at this point.
2. The quantile regression function: When the confidence
intervals cannot be computed (I get a "Not a number in
Could you send an example where you get the "Not a number"
message? It may be there's nothing we can do about that, but it
might be worth investigating.
and I instead let gretl compute the standard errors for a tau
sequence, the graph with confidence intervals for the tau
sequence is still available, giving weird CIs.
It's intended that the tau graph is still available -- the idea is
that it will be based on +/- so many standard errors. I've
experimented with this and got OK results. Could you post an
example where the CIs are "weird"?
Further, for the quantile regression function the Gretl User?s
Guide says that for large data sets, "If you want confidence
intervals in such cases, you are advised not to use the
--intervals option, but to compute them using the method of
?plus or minus so many standard errors?." It would be great if
there was an option to automatically compute and print the CI
calculated with this option. E.g. a new radio button in the GUI:
"Compute confidence intervals using normality approximation".
OK, that's a possibility for the future. If you select just one
tau value you can get such intervals by the usual means (Model
window, Analysis, Confidence intervals), but I guess you're
talking about the multiple-tau case.