# contr.earth.response

0th

Percentile

Contrasts function for factors in the earth response. For internal use by earth.

Keywords
models
##### Usage
contr.earth.response(x, base, contrasts)
x

a factor

base

unused

contrasts

unused

##### Value

Returns a diagonal matrix. An example for a 3 level factor with levels A, B, and C:

      A B C
A 1 0 0
B 0 1 0
C 0 0 1


##### Note

Earth uses this function internally. You shouldn't need it. It is made publicly available only because it seems that is necessary for model.matrix.

contrasts