Lifeboats on the Titanic

Description

Data from Mersey (1912) about the 18 (out of 20) lifeboats launched before the sinking of the S. S. Titanic.

Usage

data("Lifeboats")

Format

A data frame with 18 observations and 8 variables.

launch

launch time in "POSIXt" format.

side

factor. Side of the boat.

boat

factor indicating the boat.

crew

number of male crew members on board.

men

number of men on board.

women

number of women (including female crew) on board.

total

total number of passengers.

cap

capacity of the boat.

Source

M. Friendly (2000), Visualizing Categorical Data: http://euclid.psych.yorku.ca/ftp/sas/vcd/catdata/lifeboat.sas

References

L. Mersey (1912), Report on the loss of the “Titanic” (S. S.). Parliamentary command paper 6452.

M. Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.

Examples

data("Lifeboats")
attach(Lifeboats)
ternaryplot(
  Lifeboats[,4:6],
  pch = ifelse(side == "Port", 1, 19),
  col = ifelse(side == "Port", "red", "blue"),
  id  = ifelse(men / total > 0.1, as.character(boat), NA),
  prop_size = 2,
  dimnames_position = "edge",
  main = "Lifeboats on the Titanic"
)
grid_legend(0.8, 0.9, c(1, 19), c("red", "blue"),
  c("Port", "Starboard"), title = "SIDE")
detach(Lifeboats)