lynx_1942: Annual Canadian Lynx Trappings 1821-1939

In andreas50/utsData: Example Data Sets of Unevenly Spaced Time Series

Description

The annual number of Canadian lynx (Lynx canadensis) catches by the Hudson's Bay Company. Each recorded year (called Outfit) counts collected furs from 1 June of that year until 31 May of the following year.

Format

A uts_vector object. An observation for date, let's say, 1840-05-31 represents the total number of lynx catches for outfit 1839, which ran from 1 June 1839 to 31 May 1840.

Source

Elton, C. and Nicholson, M. (1942). The Ten-Year Cycle in Numbers of the Lynx in Canada. Journal of Animal Ecology, Vol 11, No. 2, pp. 215-244.

See Also

The lynx dataset in base R is similar, except that it (i) contains data for only a single geographic region (instead of all eleven regions), (ii) has an obvious typo (compared to its quoted source).

Examples

data(lynx_1942)
plot(lynx_1942[["MacKenzie River"]], log="y", type="o")
abline(v=date_decimal(seq(1820, 1930, by=10)), col="grey")

andreas50/utsData documentation built on May 13, 2019, 12:52 p.m.