Beech Trees

Description

Several measurements of 42 beech trees (Fagus Sylvatica) taken from a forest in Navarra (Spain).

Usage

biomass

Format

A data frame with 42 observations on the following 4 variables:

Dn

diameter of the stem in centimeters

H

height of the tree in meters

PST

weight of the stem in kilograms

PSA

aboveground weight in kilograms

Source

Gobierno de Navarra and Gestion Ambiental Viveros y Repoblaciones de Navarra, 2006. The data were obtained within the European Project FORSEE.

References

Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.

Examples

plot(log(PSA)~log(Dn), data=biomass)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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Type 'demo()' for some demos, 'help()' for on-line help, or
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> library(PASWR)
Loading required package: e1071
Loading required package: MASS
Loading required package: lattice
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/PASWR/biomass.Rd_%03d_medium.png", width=480, height=480)
> ### Name: biomass
> ### Title: Beech Trees
> ### Aliases: biomass
> ### Keywords: datasets
> 
> ### ** Examples
> 
> plot(log(PSA)~log(Dn), data=biomass)
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>