growth: Berkeley Growth Study data

In fda: Functional Data Analysis

Berkeley Growth Study data

Description

A list containing the heights of 39 boys and 54 girls from age 1 to 18 and the ages at which they were collected.

Format

This list contains the following components:

hgtm

a 31 by 39 numeric matrix giving the heights in centimeters of 39 boys at 31 ages.

hgtf

a 31 by 54 numeric matrix giving the heights in centimeters of 54 girls at 31 ages.

age

a numeric vector of length 31 giving the ages at which the heights were measured.

Details

The ages are not equally spaced.

Source

Ramsay, James O., and Silverman, Bernard W. (2006), Functional Data Analysis, 2nd ed., Springer, New York.

Ramsay, James O., and Silverman, Bernard W. (2002), Applied Functional Data Analysis, Springer, New York, ch. 6.

Tuddenham, R. D., and Snyder, M. M. (1954) "Physical growth of California boys and girls from birth to age 18", University of California Publications in Child Development, 1, 183-364.

Examples

with(growth, matplot(age, hgtf[, 1:10], type="b"))

fda documentation built on May 31, 2023, 9:19 p.m.