nectriacanker: Fixed area sample of tree diameter and abundance of nectria...
In trobinj/trtools: Miscellaneous Tools for Teaching Statistics
nectriacanker R Documentation
Fixed area sample of tree diameter and abundance of nectria cankers.
Description
These data are from a sample of fixed area plots, each of area 0.01ha from a 10ha tract of land. Tree diameter and the number of cankers were observed for each tree in each plot.
Usage
nectriacanker
Format
A data frame with 38 observations and three variables:
- plot:
fixed area plot number
- dbh:
tree diameter at breast height in cm
- cankers:
number of observed cankers on tree
Source
Barrett, J. P. & Nutt, M. E. (1979). Survey sampling in the environmental sciences: A computer approach. Wentworth, NH: COMPress, Inc.
Gregoire, T. G. & Valentine, H. T. (2007). Sampling strategies for natural resources and the environment. Boca Raton, FL: Chapman & Hall/CRC.
trobinj/trtools documentation built on Jan. 3, 2025, 4:14 a.m.
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| nectriacanker | R Documentation |
Fixed area sample of tree diameter and abundance of nectria cankers.
Description
These data are from a sample of fixed area plots, each of area 0.01ha from a 10ha tract of land. Tree diameter and the number of cankers were observed for each tree in each plot.
Usage
nectriacanker
Format
A data frame with 38 observations and three variables:
- plot:
fixed area plot number
- dbh:
tree diameter at breast height in cm
- cankers:
number of observed cankers on tree
Source
Barrett, J. P. & Nutt, M. E. (1979). Survey sampling in the environmental sciences: A computer approach. Wentworth, NH: COMPress, Inc.
Gregoire, T. G. & Valentine, H. T. (2007). Sampling strategies for natural resources and the environment. Boca Raton, FL: Chapman & Hall/CRC.
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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