Below are the solutions to these exercises on “Non-Linear Model in R.” ############### # # # Exercise 1 # # # ############### # load data file Mussel <- read.csv(file.choose()) mussel.nls1 <- nls(SPECIES ~ a * AREA^b, start = list(a = 0.1, b = 1), data = Mussel) summary(mussel.nls1) ## ## Formula: SPECIES ~ a * […]

# non-linear modelling

## Non-Linear Models in R: Exercises

A mechanistic model for the relationship between x and y sometimes needs parameter estimation. When model linearisation does not work,we need to use non-linear modeling. There are three main differences between non-linear and linear modeling in R: 1. Specify the exact nature of the equation. 2. Replace the lm() with nls(), which means non-linear least […]