R help - May 2000 - Robust location and scatter

Dear list,

one year before I installed the add-on package lqs to perform robust
estimation of multivariate location and scatter (cov.mve, cov.mcd, cov.rob).
I had the feeling that there was something wrong with the results (perhaps I
can reproduce it if necessary). 
Now I looked in the CRAN-archive to see if there is a new version of lqs or
if cov.rob had been included in the base package in the meantime.
I browsed through the recent help.start()-manual and found
the help pages for the robust cov-functions, but it is indicated that they
still belong to the package lqs. But a package lqs is no longer offered.
Is the package discarded (perhaps because of errors), or am I simply too 
confused to search at the right place? 

The most improtant question is of course:
How to perform minimum covariance determinant/minimum volume ellipsoid
estimation with R?

Best regards,
Christian

***

Christian Hennig
Fachbereich Mathematik - SPST
 (Schwerpunkt Mathematische Statistik und Stochastische Prozesse,
 Zentrum fuer Modellierung und Simulation)
Bundesstrasse 55
D-20146 Hamburg
Tel: x40/42838 4907, privat x40/631 62 79
hennig at math.uni-hamburg.de
http://www.math.uni-hamburg.de/home/hennig/



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Christian Hennig <fm3a004 at math.uni-hamburg.de> writes:
> one year before I installed the add-on package lqs to perform robust
> estimation of multivariate location and scatter (cov.mve, cov.mcd,
cov.rob).
> I had the feeling that there was something wrong with the results (perhaps
I
> can reproduce it if necessary). 
> Now I looked in the CRAN-archive to see if there is a new version of lqs or
> if cov.rob had been included in the base package in the meantime.
> I browsed through the recent help.start()-manual and found
> the help pages for the robust cov-functions, but it is indicated that they
> still belong to the package lqs. But a package lqs is no longer offered.
> Is the package discarded (perhaps because of errors), or am I simply too 
> confused to search at the right place? 
lqs is a package in the standard library in recent versions of R. Use
library(lqs) to access it. If there are bugs in it, we''d appreciate a
report with a demonstration....

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /''_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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