[Rd] R: prcomp documentation (PR#7372)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed Nov 17 10:31:55 CET 2004
I have no idea what you mean by this. prcomp works on a matrix, which has
two dimensions, and what you mean by `dimensionality of the data' in PCA
depends on whether you are doing R mode or Q mode PCA.
Have you read the references on the help page?
On Wed, 17 Nov 2004 clock at twibright.com wrote:
> help(prcomp) documentation doesn't say that dimensionality of the data treated
> is number of columns of the matrix. I suggest this to be added somewhere near
> the description of the matrix argument 'x'.
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)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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