norm_diurnal_centroid: Normalized diurnal centroid calculation

In sapfluxnetr: Working with 'Sapfluxnet' Project Data

Normalized diurnal centroid calculation

Description

Calculate the normalized diurnal centroid for sapflow variables

Usage

norm_diurnal_centroid(sapf_var, rad_var)

Arguments

sapf_var	A numeric vector containing the sapflow values for a day at a regular intervals. Missing values are allowed but not recommended.
rad_var	A numeric vector containing the incoming radiation for a day at a regular intervals. Missing values are allowed but not recommended. Must be the same length as sapf_var.

Details

The code for this function has been kindly provided by Jacob Nelson in python (see https://github.com/jnelson18/FluxnetTools/blob/master/FileS3.py) and has been translated to a tidy data philosophy in R to be used inside a summarise statement.

Value

A numeric value with the normalized diurnal centroid value

Normalized diurnal centroid algorithm

This function calculates the diurnal centroid of sapflow measures relative to the diurnal centroid of incoming radiation (in any units). For that the incoming radiation diurnal centroid is substracted from the sapflow diurnal centroid:

Sapf_cent - IncomingRad_cent

Author(s)

Jacob Nelson & Víctor Granda

sapfluxnetr documentation built on Feb. 16, 2023, 7:52 p.m.