Great, thanks
On Fri, Nov 9, 2012 at 12:28 PM, Glynn Clements <[email protected]>wrote: > > Markus Metz wrote: > > > >> Just wondering, if it is implemented in r.regression.series, would it > be > > >> very difficult to port to r.series? Or do the two things function > different > > >> internally? > > > > > > It could probably be added to r.series quite quickly if someone was > > > willing to provide definitions for "t-value" and "p-value". > > > > The t-value of a simple linear regression can be calculate with > > > > t = sqrt(Rsq) * sqrt((n - 2) / (1 - Rsq)); > > > > Rsq = R squared or coefficient of determination (r.series > method=detcoeff) > > n = sample size > > In which case, it can be calculated with e.g. > > r.series ... output=tmp.rsq,tmp.n method=detcoeff,count > r.mapcalc 'outmap = sqrt(tmp.rsq * (tmp.n - 2) / (1 - tmp.rsq))' > > I've added method=tvalue in r53742. > > -- > Glynn Clements <[email protected]> >
_______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
