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Mixed symbolic data for bird species with interval-valued morphological measurements and categorical symbolic variables (habitat, color).
data(bird.mix)
An object of class symbolic_tbl (inherits from tbl_df, tbl, data.frame) with 20 rows and 2 columns.
symbolic_tbl
tbl_df
tbl
data.frame
Billard, L. and Diday, E. (2006). Symbolic Data Analysis. Wiley. Table 2.5.
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