Learn R Programming

gpk (version 1.0)

Mimosaceae: Relationship between tree height and girth

Description

For various reasons, it is of interest to estimate volume of a tree. Obviously direct measurement is quite difficult. The next best thing is to assume that the tree has a conical shape. Even with this assumption we need to measure radius at the base and height for estimating volume. Measurement of height can be cumbersome. However, measurement of girth is easy at about one meter height. Hence the simplest method is to use some relationship between girth and height and estimate height from girth.

Usage

data(Mimosaceae)

Arguments

Format

A data frame with 129 observations on the following 4 variables.
Family
Family name
Species_name
Species name
GBH
Girth at breast height
Height
Height (meters)

Source

http://ces.iisc.ernet.in/hpg/nvjoshi/statspunedatabook/databook.html

Details

Linear/ nonlinear regression for each species, testing hypothesis that the relationship is same across species.