angle.mapping {changepoint.geo} | R Documentation |

## Principle angle mapping

### Description

Calculates the principle angle of each time vector to the reference vector. Note data points are not translated in this function and error checking is not performed!

### Usage

```
angle.mapping(X,ref.vec.value=rep(1,length(X[1,])))
```

### Arguments

`X` |
A matrix containing the centralized data of size n by p. |

`ref.vec.value` |
A vector containing the reference vector from which the principle angle will be calculated. |

### Details

This function calculates the principle angle between each time vector and the reference vector. Note the translation within `geomcp`

happens outside of the function.

### Value

A vector of length n is returned with the angle mapping for each time point.

### Author(s)

Thomas Grundy

### See Also

### Examples

```
X <- rbind(matrix(rnorm(100*50,2),ncol=50),matrix(rnorm(100*50,2,4),ncol=50))
ref.vec.value <- rep(1,50)
ans <- angle.mapping(X,ref.vec.value)
ans
```

[Package

*changepoint.geo*version 1.0.2 Index]