Examples of Standard Nonlinear Curves

This figure is based on Figure 3.7.1 in the The Guide to GenStat^® Release 7.1 - Part 2: Statistics. It shows the shape of curves representative of each type, although you should be aware that some curves, especially the rational functions, can vary greatly as their parameters change.

You can use this figure to help choose the type of curve to fit to your data. Click on a graph for details of the model it represents.

Exponential (SENSE=right) Exponential (SENSE=left) Line + Exponential (SENSE=right)

Line + Exponential (SENSE=left) Critical Exponential (SENSE=right) Critical Exponential (SENSE=left)

Double Exponential (SENSE=right) Double Exponential (SENSE=left) Logistic

Generalized Logistic Gompertz (SENSE=right, β>0) Gompertz (SENSE=left, β<0)

Gompertz (SENSE=right, β<0) Gompertz (SENSE=left, β>0) Linear divided by Linear

Quadratic divided by Linear Quadratic divided by Quadratic Fourier

Double Fourier Gaussian Double Gaussian


Exponential (SENSE=right)	Exponential (SENSE=left)	Line + Exponential (SENSE=right)

Line + Exponential (SENSE=left)	Critical Exponential (SENSE=right)	Critical Exponential (SENSE=left)

Double Exponential (SENSE=right)	Double Exponential (SENSE=left)	Logistic

Generalized Logistic	Gompertz (SENSE=right, β>0)	Gompertz (SENSE=left, β<0)

Gompertz (SENSE=right, β<0)	Gompertz (SENSE=left, β>0)	Linear divided by Linear

Quadratic divided by Linear	Quadratic divided by Quadratic	Fourier

Double Fourier	Gaussian	Double Gaussian