# Help functions.

### Description

Help function used in other functions.

### Usage

1 2 3 4 5 6 7 8 | ```
absIncrease(data, m1 = 10, m2 = 10, gfun = mean)
PGC(data, m1 = 10, m2 = 10, gfun = mean)
PGCreleases(change, criteria = 0.2)
PGCreleasesSplechtna(change, criteria = 0.5)
priorGrowth(data, m1 = 10, m2 = 10, gfun = mean)
writeReleaseStats(release_list, mytext)
removeMajorFromModerate(mod,maj,zero,on)
relListToDataFrame(release_list,data)
``` |

### Arguments

`data` |
Data frame returned by read.* function of dplR. |

`m1` |
Determines the number of years to be averaged (including target year) for period prior the potential releas. |

`m2` |
Determines the number of years to be averaged (including target year) for period prior the potential releas. |

`gfun` |
Determines if M1 and M2 values are mean or median for selected period. |

`criteria` |
Threshold for detection of moderate release. |

`change` |
Percentage growth change. |

`release_list` |
List of releases per tree. |

`mod` |
List of moderate releases per tree. |

`maj` |
List of major releases per tree. |

`zero` |
Value for the beginning of the list. |

`on` |
List of growth changes per tree. |

`mytext` |
Prefix of the info text. |

### Details

Just helping functions.

### Value

Various.

### Note

Check the reference.

### Author(s)

Pavel Fibich <pavel.fibich@prf.jcu.cz>, Jan Altman <altman.jan@gmail.com>, Tuomas Aakala <tuomas.aakala@helsinki.fi>, Jiri Dolezal <jiriddolezal@gmail.com>

### References

Altman J, Fibich P, Dolezal J & Aakala T (2014) TRADER: a package for Tree Ring Analysis of Disturbance Events in R. Dendrochonologia 32: 107-112.

### See Also

`doAll`

### Examples

1 2 3 |