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poison
2005 Jan 27
2
Results of MCD estimators in MASS and rrcov
Hi!
I tested two different implementations of the robust MCD estimator:
cov.mcd from the MASS package and
covMcd from the rrcov package.
Tests were done on the hbk dataset included in the rrcov package.
Unfortunately I get quite differing results -- so the question is whether
this differences are justified or an error on my side or a bug?
Here is, what I did:
> require(MASS)
>
2004 Apr 25
2
package fdim slopeopt error (PR#6819)
Full_Name: Fred J.
Version: 1.8.1
OS: windows 2000
Submission from: (NULL) (203.26.24.216)
platform i386-pc-mingw32
the error can be duplicated as follows
> rt <- data.frame(8:15, 7:14, 6:13, 5:12, 4:11, 3:10, 2:9, 1:8)
> library(fdim)
> FD <- (fdim(rt,q=2))
Error in slopeopt(AllPoints, Alpha) : Object "LineP" not found