ShrinkingSeals: Seal Body Lengths and Age

Description Format Source Examples

Description

Body length (cm) and age (days) for 9,665 female Northern fur seals (Callorhinus ursinus).

Format

A data frame with 9,665 observations on the following 2 variables.

age

age (days)

length

body length (cm)

Source

Trites, A.W. and M.A. Bigg. 1996. Physical growth of northern fur seals: seasonal fluctuations and migratory influences. Journal of Zoology (London) 238: 459-482.

Examples

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str(ShrinkingSeals)

plot(ShrinkingSeals, pch = 16, cex = 0.5)
xyplot(length ~ age, ShrinkingSeals, pch=16, alpha=0.65, cex=0.6)

kmiddleton/abd documentation built on Feb. 25, 2018, 11:41 a.m.