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Customizing the gapminder display

Let's put some of these features to the test with our by-country life expectancy trajectory plot. Note that we are again working with just the two countries from Oceania.

Cet exercice fait partie du cours

Visualizing Big Data with Trelliscope in R

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Instructions

  • Add a geom_smooth() layer to add a fitted linear model using the "lm" method.
  • Set the scales to be "sliced".
  • With the linear model layer added to the plot, specify that automatic cognostics should be computed for this display and explore what new cognostics this layer adds to the display.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

library(trelliscopejs)
library(ggplot2)

# Create the plot
ggplot(gapminder, aes(year, lifeExp)) +
  geom_point() +
  geom_smooth(method = ___, se = FALSE) +
  facet_trelliscope(~ country + continent,
    name = "lifeExp_by_country",
    desc = "Life expectancy vs. year for 142 countries.",
    nrow = 1, ncol = 2,
    # Set the scales
    scales = ___,
    # Specify automatic cognistics
    auto_cog = ___)
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