eucaleaf: Leaf measurements for Eucalyptus nitens trees in Tasmania,...
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eucaleaf

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: Time factor, in two levels: early or Late.
tree: Sample tree code identificator.
shoot: Shoot description factor, in three levels.
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 \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1111/j.1541-0420.2008.01110.x")}