>>>>> Gerrit Eichner
>>>>> on Fri, 14 Jan 2022 16:42:28 +0100 writes:
> Hi Paul, take a look at base R's function contour (and the
> Examples section of its help page), and follow maybe the
> hints under "See also".
> Hth -- Gerrit
Also, with Recommended packages 'cluster' and its
ellipsoidPoints() function:
The result of
library(cluster)
example(ellipsoidPoints)
is the attached plot with a classical and
robust (via recommend pkg 'MASS') covariance ellipse drawn.
Best,
Martin
--
Martin Maechler
ETH Zurich; R Core, and maintainer of 'cluster'
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