stephen sefick ssefick at gmail.com
Thu Oct 23 16:50:42 CEST 2008

reproducible code - are you assigning the results to an object

On Thu, Oct 23, 2008 at 10:34 AM, Gianni Messeri
<messeri at lamma.rete.toscana.it> wrote:
> Hi,
> I'm trying to perform a Principal Component Analysis on meteorological data
> with 10 predictors.
> I use the library  pcaMethods to obtain a lot of information (loadings,
> scores, mean, standard deviation, etc).
> How can I obtain the scores (new PC variables) for new values of weather
> predictors using the results of  PCA analysis (loadings, mean value,
> standard deviation) and without performing everytime the PCA analysis
> through my R-script on an updated set of data?
> I used the loading on my variables (predictors minus mean value), but only
> the PC1 was correct.
> Thanks
> Gianni
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Stephen Sefick
Research Scientist
Southeastern Natural Sciences Academy

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