Doing Excel Things in R #5

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This code shows two ways to create a basic pie chart in R. The first is fully automated.

pie(table(iris$Species))

The second is more customized with labels and legends.

vec <- iris$Species
vec_data <- data.frame(table(vec))
cols <- c('white', 'blue', 'red')
percentlabel <- round(100 * vec_data$Freq / sum(vec_data$Freq), 2)
pielabel <- paste(percentlabel, '%', sep = '')

pie(vec_data$Freq, labels = pielabel, col = cols, main = 'Pie Chart')
legend('topleft', c('setosa', 'versicolor', 'virginica'), fill = cols, cex = 0.8)

Though there are many similar sources for this code on the web, this particular code was adapted from: “Create Pie Charts in R”