echinacea: Life History Data on Echinacea angustifolia
In aster: Aster Models

echinacea

R Documentation

Life History Data on Echinacea angustifolia

Description

Data on life history traits for the narrow-leaved purple coneflower Echinacea angustifolia

Usage

data(echinacea)

Format

A data frame with records for 570 plants observed over three years.

ld02: Indicator of being alive in 2002.
ld03: Ditto for 2003.
ld04: Ditto for 2004.
fl02: Indicator of flowering 2002.
fl03: Ditto for 2003.
fl04: Ditto for 2004.
hdct02: Count of number of flower heads in 2002.
hdct03: Ditto for 2003.
hdct04: Ditto for 2004.
pop: the remnant population of origin of the plant (all plants were grown together, pop encodes ancestry).
ewloc: east-west location in plot.
nsloc: north-south location in plot.

Source

Stuart Wagenius, https://www.chicagobotanic.org/research/staff/wagenius

References

These data are analyzed in the following.

Geyer, C. J., Wagenius, S., and Shaw, R. G. (2007) Aster Models for Life History Analysis. Biometrika, 94, 415–426. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1093/biomet/asm030")}.

Examples

library(aster)
data(echinacea)
vars <- c("ld02", "ld03", "ld04", "fl02", "fl03", "fl04",
    "hdct02", "hdct03", "hdct04")
redata <- reshape(echinacea, varying = list(vars), direction = "long",
    timevar = "varb", times = as.factor(vars), v.names = "resp")
names(echinacea)
dim(echinacea)
names(redata)
dim(redata)

aster documentation built on May 29, 2024, 2:09 a.m.