Ecole Nationale Supérieure Agronomique de Montpellier ... - CIAM

Fig. 1. Factorial maps from a multivariate Hill & Smith analysis coupling the categorical and
quantitative variables that describe the 225 apricot orchards. A, projections of the orchards on the
first factorial plane (F1×F2, F1 and F2 representing respectively 13.8% and 8.5% of the total
inertia). B-F, categorical variables. For a given variable, each circle represents the mean position
(barycenter) of one modality on F1×F2, in connection with all the associated orchards. The
supplementary variable GRW was not used to define F1×F2 (see in text). G-J, quantitative
variables. For a given variable, each orchard is represented by a gray circle (positive value) or a
white square (negative value) with an area proportional to the absolute value of the normalized
variable. K, projection of the variables defining F1×F2. Thin arrows: categorical variables; thick
arrows: quantitative variables. Correlated variables have collinear vectors; the weight of the
variables in the analysis increases with their distance from the center of the graph.
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