trees: von Guttenberg Norway spruce tree measurement data
In spuRs: Functions and Datasets for "Introduction to Scientific Programming and Simulation Using R"
Description
Usage
Format
Source
References
Examples
Description
These are a subset of the von Guttenberg data, a set of measurements on
Norway spruce (Picea abies [L.] Karst) in several different
locations and site categories.
Usage
1
Format
A data frame with 1200 observations on the following 3 variables.
- ID
A factor identifying the tree by location, site,
and tree number.
- Age
The age at which the tree was measured.
- Vol
The bole volume of the tree, in cubic dm.
Source
These data were kindly provided by Professor Boris Zeide, University of
Arkanasa, Monticello, AK, USA, and are further documented in Zeide (1993).
References
A.R. von Guttenberg. 1915. Growth and yield of spruce in Hochgebirge.
Franz Deuticke, Wien. (In German)
B. Zeide, 1993. Analysis of growth equations. Forest Science
39 594–616.
Examples
1
Example output
Loading required package: MASS
Loading required package: lattice
spuRs documentation built on May 2, 2019, 12:44 p.m.
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Description Usage Format Source References Examples
Description
These are a subset of the von Guttenberg data, a set of measurements on Norway spruce (Picea abies [L.] Karst) in several different locations and site categories.
Usage
1 |
Format
A data frame with 1200 observations on the following 3 variables.
- ID
A factor identifying the tree by location, site, and tree number.
- Age
The age at which the tree was measured.
- Vol
The bole volume of the tree, in cubic dm.
Source
These data were kindly provided by Professor Boris Zeide, University of Arkanasa, Monticello, AK, USA, and are further documented in Zeide (1993).
References
A.R. von Guttenberg. 1915. Growth and yield of spruce in Hochgebirge. Franz Deuticke, Wien. (In German)
B. Zeide, 1993. Analysis of growth equations. Forest Science 39 594–616.
Examples
1 |
Example output
Loading required package: MASS
Loading required package: lattice
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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