Plotting symbols
Recall that plotly allows you to customize the plotting symbols used through the symbols argument to add_markers(). Both numeric and character specifications of symbols are permitted. For example, 100 denotes an open circle which can also be specified as "circle-open".
To manually specify the scale for, say, three levels you can specify symbols = c("circle", "triangle", "x") to ensure that the groups are represented by circles, triangles, and x's, in that order.
Here's the full list of valid plotting symbols for your reference.
In this exercise, you'll change the plotting symbols for the income categories.
plotly and the happy data set have already been loaded for you.
Questo esercizio fa parte del corso
Intermediate Interactive Data Visualization with plotly in R
Istruzioni dell'esercizio
- Change the plotting symbols for
incomecategories according to the following scheme: - low:
"circle-open"; lower-middle:"square-open"; upper-middle:"star-open"; high:"x-thin-open"
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Fill in the specified plotting symbols
happy %>%
plot_ly(x = ~life.expectancy, y = ~happiness) %>%
add_markers(symbol = ~income, symbols = c(___, ___, ___, ___))