mean.demogdata: Mean and median functions for data of class demogdata
Description
Computes mean or median of demographic rates for each age level.
Usage
# S3 method for demogdata
mean(x, series = names(x$rate)[1],
transform = TRUE, na.rm = TRUE, ...)
# S3 method for demogdata
median(x, na.rm = FALSE, series = names(x$rate)[1],
transform = TRUE, method = c("hossjercroux", "coordinate"), ...)
Value
A list containing x=ages and y=mean or median rates.
Arguments
x
Demogdata object such as created using read.demogdata or smooth.demogdata.
series
Name of demogdata series to plot..
transform
Should transform of data be taken first?
na.rm
a logical value indicating whether NA values should be stripped before the computation proceeds.
...
Other arguments.
method
Method for computing the median. Either "coordinate" for a coordinate-wise median, or "hossjercroux" for the
L1-median using the Hossjer-Croux algorithm.
Author
Rob J Hyndman
References
Hossjer, O., and Croux, C. (1995) Generalized univariate signed rank statistics for testing
and estimating a multivariate location parameter. Nonparametric Statistics, 4, 293-308.