On the resolving power of principal component analysis in plant community ordination |
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Authors: | Enrico Feoli |
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Institution: | (1) Istituto ed Orto Botanico, Università degli Studi di Trieste, I 34100, Italy |
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Abstract: | Summary A comparison between centered and non-centered principal component analysis is made on the basis of the resolving power of the methods. The results indicate the appropriateness of using a centered PCA when the aim is an ordination of plant communities, and the noncentered PCA when the aim is to elicit the taxonomic structure of a collection.Contribution from the Working Group for Data-Processing in Phytosociology, International Society for Vegetation Science.This work was supported by the Italian C.N.R. and the Centro di Calcolo dell'Università di Trieste within the framework of a broader project entitled I metodi statistici e le loro applicazioni mediante l'uso dell'elaboratore. |
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Keywords: | Centering Non-centering Principal component analysis Resolving power |
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