# calculate a local maximum

### Description

The function calculates a local maximum of the vector `x`

surrounded by at least `n.points`

lower numbers.

### Usage

1 | ```
localmax(x, n.points=2)
``` |

### Arguments

`x` |
a vector of numbers. |

`n.points` |
a minimum number of lower values to determine the local maximum. Default is two points. |

### Details

The function calculates a local maximum of the vector `x`

, i.e. the highest value of the vector `x`

surrounded by at least `n`

lower numbers. The concept of the local maximum applied to ERP analysis is taken from Luck (2005).

### Value

The local maximum of the vector `x`

is returned.

### Author(s)

Giorgio Arcara

### References

Luck, S., J. (2005). An Introduction to the Event-Related Potential Technique. Cambridge, Mass.: The MIT Press.

### Examples

1 2 3 4 5 6 7 8 |

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