On Tue, 2005-04-05 at 16:59 +1200, Brett Stansfield wrote: > Dear R > Should I be concerned if the loadings to a Principle Component Analysis are > as follows: > > Loadings: > Comp.1 Comp.2 Comp.3 Comp.4 > X100m -0.500 0.558 0.661 > X200m -0.508 0.379 0.362 -0.683 > X400m -0.505 -0.274 -0.794 -0.197 > X800m -0.486 -0.686 0.486 0.239 > > Comp.1 Comp.2 Comp.3 Comp.4 > SS loadings 1.00 1.00 1.00 1.00 > Proportion Var 0.25 0.25 0.25 0.25 > Cumulative Var 0.25 0.50 0.75 1.00 > > I just got concerned that no loading value was given for X100m, component > 3. I have looked at the data using list() and it all seems OK
You don't have to worry about one empty cell in loadings: the print function (called behind the curtain to show the results to you) is so clever that it doesn't show you small numbers, although they are there. I guess this happens because people with Factor Analysis background expect this. However, I would be worried if I got results like this, and would not use Princip*al* Components at all, since none of the components seems to be any more principal than others. Wouldn't original data do? cheers, jari oksanen -- Jari Oksanen <[EMAIL PROTECTED]> ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
