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Examples
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Looking at clusters in the biplot graphic, it was assumed that the first axis was best explained by the factor cotton variety (56\%) and the second axis by the factor
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The symmetric map is, strictly speaking, not a biplot (see, for example, Greenacre (1993)), but Gabriel (2002) shows that the scalar - product approximations are not substantially degraded in most cases.
Recently Uploaded Slideshows dessybudiyanti 2009
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Notice that because of the weighting, the origin of the biplot is at the centroid of the elements, where the elements are weighted by their respective average percentages.
Recently Uploaded Slideshows dessybudiyanti 2009
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When the data are in the usual row by column format of cases (or samples) by variables, Aitchison and Greenacre (2002) call the RMP biplot a form biplot and the CMP biplot a covariance biplot.
Recently Uploaded Slideshows dessybudiyanti 2009
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Figure 2: Weighted logratio biplot of Baxter data, showing rows in principal coordinates (form biplot).
Recently Uploaded Slideshows dessybudiyanti 2009
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Aitchison and Greenacre (2002) defined a biplot based on the logarithms of ratios, or logratios, which has many interesting properties and links to the modelling of two-way tables.
Recently Uploaded Slideshows dessybudiyanti 2009
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As we will show, however, this biplot can be perturbed by low-value components.
Recently Uploaded Slideshows dessybudiyanti 2009
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Distribution of sugar composition shown in (A) the ordination biplot of a Principal Component Analysis (PCA) (eigenvalues: axis 1: 0.560, axis 2: 0.193) and (B) a Redundancy Analysis (RDA) (eigenvalues: axis 1: 0.249, axis 2: 0.066).
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