Plot of VIPs

Plots the Variable Importance in Projections (VIP) indexes of a PLS regression.

plo_vip(object, ncomp = NULL, sort = FALSE,
col = "steelblue4", repel = FALSE)

Arguments

object

an object of class mvr from pls package

ncomp

the number of components to use for computing VIPs

sort

logical. If TRUE, bars are sorted by decreasing VIPs. Default is FALSE.

col

color of the bars

repel

logical. If TRUE, the names of the variables are repelled with geom_text_repel. Default is FALSE

Value

a ggplot2 object

References

Martens, H., Næs, T. (1989) Multivariate calibration. Chichester: Wiley.

Tenenhaus, M. (1998) La Regression PLS. Theorie et Pratique. Editions TECHNIP, Paris.

Author

Nicolas Robette

See also

VIP

Examples

library(pls)
data(yarn)
pls <- mvr(density ~ NIR,
           ncomp = 5,
           data = yarn,
           validation = "CV",
           method = "oscorespls")
plo_vip(pls)
#> Warning: RGL: unable to open X11 display
#> Warning: 'rgl.init' failed, running with 'rgl.useNULL = TRUE'.