PCA_RDA_graphics        PCA_RDA_graphics function This function
                        facilitate the user creation of PCA (! from
                        FactoMineR package !) enhanced graphics with
                        multiple options. Individuals and variables
                        graphics are possible. With or without variable
                        cor, cos, contrib.. correlation to dimensions.
                        RDA outputs are displayable as table under
                        graphics.
RDA_outputs_synthesis   RDA_outputs_synthesis function
check_data_for_RDA      check_data_for_RDA function
prep_data               prep_data function
