data-sleep: Sleep in Mammals: Ecological and Constitutional Correlates

In tourr: Implement tour methods in pure R code

Description

Data from which conclusions were drawn in the article "Sleep in Mammals: Ecological and Constitutional Correlates" by Allison, T. and Cicchetti, D. (1976), _Science_, November 12, vol. 194, pp. 732-734. Includes brain and body weight, life span, gestation time, time sleeping, and predation and danger indices for 62 mammals.

Variables below for Mammals Data Set:

• bodywgt, body weight in kg

• brainwgt, brain weight in g

• nond, slow wave ("nondreaming") sleep (hrs/day)

• dream, paradoxical ("dreaming") sleep (hrs/day)

• sleep, total sleep (hrs/day) (sum of slow wave and paradoxical sleep)

• span, maximum life span

• gest, gestation time (days)

• pred, predation index (1-5) 1 = minimum (least likely to be preyed upon) 5 = maximum (most likely to be preyed upon)

• exp, sleep exposure index (1-5) 1 = least exposed (e.g. animal sleeps in a well-protected den) 5 = most exposed

• danger, overall danger index (1-5) (based on the above two indices and other information) 1 = least danger (from other animals) 5 = most danger (from other animals)

For more details, see

Allison, Truett and Cicchetti, Domenic V. (1976), "Sleep in Mammals: Ecological and Constitutional Correlates", _Science_, November 12, vol. 194, pp. 732-734.

The above data set can be freely used for non-commercial purposes and can be freely distributed (permission in writing obtained from Dr. Truett Allison).

Submitted by Roger Johnson [e-mail]

Usage

data(sleep)

Format

A 62 x 10 numeric array

tourr documentation built on May 2, 2019, 5:28 p.m.