Description Details References See Also Examples
LondonYorke
is a data frame containing the monthly number of
reported cases of chickenpox, measles, and mumps from two American cities
(Baltimore and New York) in the mid-20th century (1928–1972).
ewmeas
and ewcitmeas
are data frames containing weekly
reported cases of measles in England and Wales. ewmeas
records the
total measles reports for the whole country, 1948–1966. One questionable
data point has been replaced with an NA. ewcitmeas
records the
incidence in seven English cities 1948–1987. These data were kindly
provided by Ben Bolker, who writes: “Most of these data have been
manually entered from published records by various people, and are prone to
errors at several levels. All data are provided as is; use at your own
risk.”
W. P. London and J. A. Yorke, Recurrent Outbreaks of Measles, Chickenpox and Mumps: I. Seasonal Variation in Contact Rates, American Journal of Epidemiology, 98:453–468, 1973.
Other datasets: blowflies
,
bsflu
, dacca
,
parus
Other pomp examples: blowflies
,
dacca
, gompertz
,
ou2
, ricker
,
rw2
, sir_models
,
verhulst
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | plot(cases~time,data=LondonYorke,subset=disease=="measles",type='n',main="measles",bty='l')
lines(cases~time,data=LondonYorke,subset=disease=="measles"&town=="Baltimore",col="red")
lines(cases~time,data=LondonYorke,subset=disease=="measles"&town=="New York",col="blue")
legend("topright",legend=c("Baltimore","New York"),lty=1,col=c("red","blue"),bty='n')
plot(
cases~time,
data=LondonYorke,
subset=disease=="chickenpox"&town=="New York",
type='l',col="blue",main="chickenpox, New York",
bty='l'
)
plot(
cases~time,
data=LondonYorke,
subset=disease=="mumps"&town=="New York",
type='l',col="blue",main="mumps, New York",
bty='l'
)
plot(reports~time,data=ewmeas,type='l')
plot(reports~date,data=ewcitmeas,subset=city=="Liverpool",type='l')
|
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