absTreshold: Compute absolute threshold

In TRADER: Tree Ring Analysis of Disturbance Events in R

Description

"Blind" definition of the absolute-increase threshold of Fraver & White 2005 (1.25*standard deviation).

Usage

absTreshold(abs, tvalue = 1.25)

Arguments

abs	A data.frame with series as columns and years as rows such as that produced by read.* function of dplR .
tvalue	constat from Fraver & White 2005

Details

You can specifie threshold value or use 1.25 * standard deviation used in Fraver & White 2005.

Value

Returns one threshold value.

Note

Check the reference.

Author(s)

Pavel Fibich <[e-mail]>, Jan Altman <[e-mail]>, Tuomas Aakala <[e-mail]>, Jiri Dolezal <[e-mail]>

References

Fraver, S. & White, A.S. 2005. Identifying growth releases in dendrochronological studies of forest disturbance. Canadian Journal of Forest Research-Revue Canadienne De Recherche Forestiere, 35, 1648-1656.

See Also

help absoluteIncrease

Examples

data(relData)
abs<-absIncrease(relData1)
absTreshold(abs)

TRADER documentation built on May 2, 2019, 9:02 a.m.