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% File src/library/datasets/man/trees.Rd
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% File src/library/datasets/man/trees.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2007 R Core Team
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% Copyright 1995-2018 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{trees}
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\name{trees}
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\docType{data}
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\docType{data}
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\alias{trees}
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\alias{trees}
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\title{Girth, Height and Volume for Black Cherry Trees}
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\title{Diameter, Height and Volume for Black Cherry Trees}
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\description{
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\description{
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  This data set provides measurements of the girth, height and volume
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  This data set provides measurements of the diameter, height and volume
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  of timber in 31 felled black cherry trees.  Note that girth is the
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  of timber in 31 felled black cherry trees.  Note that the diameter (in inches) is erroneously
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  diameter of the tree (in inches) measured at 4 ft 6 in above the
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  labelled Girth in the data. It is measured at 4 ft 6 in above the ground.
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  ground.
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}
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}
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\usage{trees}
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\usage{trees}
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\format{
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\format{
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  A data frame with 31 observations on 3 variables.
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  A data frame with 31 observations on 3 variables.
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  \tabular{rlll}{
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  \tabular{rlll}{
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    \code{[,1]} \tab \code{Girth} \tab numeric
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    \code{[,1]} \tab \code{Girth} \tab numeric
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    \tab Tree diameter in inches\cr
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    \tab Tree diameter (rather than girth, actually) in inches\cr
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    \code{[,2]} \tab \code{Height}\tab numeric
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    \code{[,2]} \tab \code{Height}\tab numeric
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    \tab Height in ft\cr
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    \tab Height in ft\cr
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    \code{[,3]} \tab \code{Volume}\tab numeric
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    \code{[,3]} \tab \code{Volume}\tab numeric
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    \tab Volume of timber in cubic ft\cr}
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    \tab Volume of timber in cubic ft\cr}
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}
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}