temp_gfdd: Growing and Freezing Degree Day Index

In remymoine/PTS-R-package: Reshape and Parameters for Time Series analyses

Description

Calculate GDD and FDD parameters values from a data.frame containing daily parameters of temperature

Usage

temp_gfdd(data,Dcol,Pcol,start,end,igt,sft)

Arguments

data	An object of class "data.frame"containing daily temperature with a column with dates in format POSIXct.
Dcol	an integer indicates the column number with dates
Pcol	an integer indicates the column number with daily average temperatures
start	a character string indicates date where calculation of GDD and FDD index started.
end	a character string indicates date where calculation of GDD and FDD index finished.
igt	value of Inferior Gdd Thresold.
sft	value of Superior Fdd Thresold.

Value

A data.frame which contains date associate with daily average temperature, gdd and fdd index.

Author(s)

Remy Moine <[e-mail]>

References

Choler, P. 2018. Winter soil temperature dependence of alpine plant distribution: Implications for anticipating vegetation changes under a warming climate. Perspectives in Plant Ecology, Evolution and Systematics 30: 6‑15.

remymoine/PTS-R-package documentation built on May 16, 2019, 5:03 a.m.