weighted.cov2 {descriptio} | R Documentation |

## Weighted covariances

### Description

Computes a matrix of weighted covariances between the columns of `x`

and the columns of `y`

.

### Usage

```
weighted.cov2(x, y = NULL, weights = NULL, na.rm = FALSE)
```

### Arguments

`x` |
a data frame of numeric vectors |

`y` |
an optional data frame of numeric vectors. Default is NULL, which means that covariances between the columns of |

`weights` |
numeric vector of weights. If NULL (default), uniform weights (i.e. all equal to 1) are used. |

`na.rm` |
logical, indicating whether NA values should be silently removed before the computation proceeds. Default is FALSE. |

### Value

a matrix of covariances

### Author(s)

Nicolas Robette

### See Also

### Examples

```
data(Movies)
weighted.cov2(Movies[,c("Budget", "Critics", "BoxOffice")], weights = rep(c(.8,1.2), 500))
```

[Package

*descriptio*version 1.3 Index]