11/3/2023 0 Comments Pca less rows than columnsOne main task of multivariate analysis is ordination, i.e. organising the observations so that similar subjects are near to each other, while dissimilar subjects are further away. Multivariate methods can help us to deal with multivariate datasets. For example, think about yield quality in genotype experiments or about the composition of weed flora in herbicide trials: in both cases, it is very important to consider several variables altogether, otherwise, we lose all information about the relationships among the observed variables and we lose the ability of producing a convincing summary of results. A main part of field experiments is multivariate, in the sense that several traits are measured in each experimental unit.
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