Nothing

```
################################
#### Ridge regression with compositional data
#### in the covariates side using the alpha-transformation
#### Plot to see how things go
#### Tsagris Michail 2/2016
#### [email protected]
#### References:Tsagris M. (2015)
#### Regression analysis with compositional data containing zero values
#### Chilean journal of statistics 6(2): 47-57
################################
alfaridge.plot <- function(y, x, a, lambda = seq(0, 5, by = 0.1) ){
## y is dependent univariate variable. It can be matrix or vector
## x are compositional data, the covariates
## a is the value of a for the alpha-transformation
## lambda contains a grid of values of the ridge regularization parameter
z <- alfa(x, a, h = TRUE)$aff ## apply the alpha-transformation
ridge.plot(y, z, lambda = lambda )
}
```

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