| eucaleaf {datana} | R Documentation |
Leaf measurements for Eucalyptus nitens trees in Tasmania, Australia.
Description
The length, width, and area of Eucalyptus nitens leaves were measured.
Usage
data(eucaleaf)
Format
Contains leaf-level variables, as follows:
- time
Early or Late
- tree
an identificator for a given sample tree
- shoot
shoot description
- l
length of the leaf, in mm
- w
width of the leaf, in mm
- la
leaf area, in cm
^{2}
Source
Although the original source of the measurements is the Dissertation of Dr Candy (1999), the data file used here was courtesy of Prof. Timothy Gregoire at Yale University (New Haven, CT, USA). Furthermore, these data were used by Gregoire and Salas (2009).
References
- Candy SG. 1999. Predictive models for integrated pest management of the leaf beetle Chrysophtharta bimaculata in Eucalyptus nitens in Tasmania. Doctoral dissertation, University of Tasmania, Hobart, Australia.
- Gregoire TG, and Salas C. 2009. Ratio estimation with measurement error in the auxiliary variate. Biometrics 65(2):590-598
Examples
data(eucaleaf)
head(eucaleaf)