Many (and one) area under the curve values | R Documentation |

Many area under the curve values.

```
colaucs(group, preds)
auc(group, preds)
```

`group` |
A numerical vector with two values, one of which must be strictly 1. |

`preds` |
A numerical matrix with scores, probabilities or any other measure. In the case of auc this is a vector. |

The AUCs are calculated column-wise or just an AUC if the vector function is used.

A vector with length equal to the number of columns of the "preds" argument, with the AUC values for each column. If the "auc" function is used then a signle number is returned.

Michail Tsagris

R implementation and documentation: Michail Tsagris <mtsagris@uoc.gr> and Manos Papadakis <papadakm95@gmail.com>.

```
ttests, ttest, ftests
```

```
## 200 variables, hence 200 AUCs will be calculated
x <- matrix( rnorm(100 * 200), ncol = 200 )
ina <- rbinom(100, 1, 0.6)
colaucs(ina, x)
a <- colaucs(ina, x)
b <- auc(ina, x[, 1])
x <- NULL
```

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