Description Usage Arguments Details Value Author(s) References See Also Examples

The function `vip`

computes the influence on the *Y*-responses
of every predictor *X* in the model.

1 | ```
vip(object)
``` |

`object` |
object of class inheriting from |

Variable importance in projection (VIP) coefficients reflect the relative
importance of each *X* variable for each *X* variate in the prediction
model. VIP coefficients thus represent
the importance of each *X* variable in fitting both the *X*-
and *Y*-variates,
since the *Y*-variates are predicted from the *X*-variates.

VIP allows to classify the *X*-variables according to their explanatory power of *Y*.
Predictors with large VIP, larger than 1, are the most relevant for explaining *Y*.

`vip`

produces a matrix of VIP coefficients for each *X* variable (rows) on each
variate component (columns).

Sébastien Déjean and Ignacio Gonz\'alez.

Tenenhaus, M. (1998). *La regression PLS: theorie et pratique*. Paris: Editions Technic.

1 2 3 4 5 6 7 8 9 10 11 | ```
data(linnerud)
X <- linnerud$exercise
Y <- linnerud$physiological
linn.pls <- pls(X, Y)
linn.vip <- vip(linn.pls)
barplot(linn.vip,
beside = TRUE, col = c("lightblue", "mistyrose", "lightcyan"),
ylim = c(0, 1.7), legend = rownames(linn.vip),
main = "Variable Importance in the Projection", font.main = 4)
``` |

```
Loading required package: MASS
Loading required package: lattice
Loading required package: ggplot2
Loaded mixOmics 6.1.3
Visit http://www.mixOmics.org for more details about our methods.
Any bug reports or comments? Notify us at mixomics at math.univ-toulouse.fr or https://bitbucket.org/klecao/package-mixomics/issues
Thank you for using mixOmics!
Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE
3: .onUnload failed in unloadNamespace() for 'rgl', details:
call: fun(...)
error: object 'rgl_quit' not found
```

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