How can R Pie Charts be customized for better visual appeal?
a) By adjusting colors, labels, and adding percentages to slices
b) By adding grid lines and axis labels
c) By rotating the pie chart
d) By changing the bar thickness
Answer:
a) By adjusting colors, labels, and adding percentages to slices
Explanation:
R pie charts can be customized for better visual appeal by adjusting the colors of the slices, adding descriptive labels, and including percentages to show the proportion each slice represents. These customizations enhance the readability and effectiveness of the chart, making it easier for viewers to understand the data.
# Customized pie chart in R
slices <- c(30, 25, 20, 25)
labels <- c("Category A", "Category B", "Category C", "Category D")
percentages <- round(100 * slices / sum(slices), 1)
pie(slices, labels = paste(labels, percentages, "%"), col = rainbow(length(slices)), main = "Customized Pie Chart")In this example, a customized pie chart is created with color-coded slices, descriptive labels, and percentage values. These enhancements make the pie chart more informative and visually appealing, allowing viewers to quickly grasp the key insights.