RGR_function: Calculate Relative Growth Rate

In ksauby/dataproc: Data processing functions.

Description

formula for relative growth rate is from Paine, C. E. T., Marthews, T. R., Vogt, D. R., Purves, D., Rees, M., Hector, A., & Turnbull, L. A. (2011). How to fit nonlinear plant growth models and calculate growth rates: an update for ecologists. Methods in Ecology and Evolution, no-no. doi:10.1111/j.2041-210X.2011.00155.x absolute growth rate (AGR) is the derivative with respect to time of the function used to predict biomass, and RGR is simply AGR divided by the current biomass RGR is (dM/dt)/M CURRENT FORMULA FOR RGR after meeting with Mary and Bob (1 Dec 2014) Bob suggested that I divide by plant size at time t-1 scale by DaysSincePrevTime

Usage

calculateRGR(x = x)

Arguments

x	Dataset to which RGR variables should be added.

ksauby/dataproc documentation built on May 20, 2019, 7:02 p.m.