[R] PCA

[Prof Brian Ripley]

?princomp refers you to prcomp for that case:

      'princomp' only handles so-called R-mode PCA, that is feature
      extraction of variables.  If a data matrix is supplied (possibly
      via a formula) it is required that there are at least as many
      units as variables.  For Q-mode PCA use 'prcomp'.


On Thu, 6 Nov 2008, Noela Sánchez wrote:

> I need perform PCA analyst with a matrix with more variables than units.
>
> The princomp command don't match with this matrix.
>
> Anybody knows a good command to do it?
>
> -- 
> Noela

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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