Circular Pie Chart

Authors

[Editor] Hu Zheng;

[Contributors]

Note

Hiplot website

This page is the tutorial for source code version of the Hiplot Circular Pie Chart plugin. You can also use the Hiplot website to achieve no code ploting. For more information please see the following link:

https://hiplot.cn/basic/circular-pie-chart?lang=en

Another form of the pie chart.

Setup

System Requirements: Cross-platform (Linux/MacOS/Windows)
Programming language: R
Dependent packages: ggplot2

# Install packages
if (!requireNamespace("ggplot2", quietly = TRUE)) {
  install.packages("ggplot2")
}

# Load packages
library(ggplot2)

Data Preparation

# Load data
data <- read.table("files/Hiplot/024-circular-pie-chart-data.txt", header = T)

# convert data structure
data$draw_percent <- data[["values"]] / sum(data[["values"]]) * 100
data$draw_class <- 1
data2 <- data
data2[["values"]] <- 0
data2$draw_class <- 0
data <- rbind(data, data2)
filtered_data <- data[data[["values"]] > 0,]

# View data
head(data)

  labels values draw_percent draw_class
1      A     20    16.666667          1
2      B     30    25.000000          1
3      C     15    12.500000          1
4      D     10     8.333333          1
5      E     45    37.500000          1
6      A      0    16.666667          0

Visualization

# Circular Pie Chart
p <- ggplot(data, aes(x = draw_class, y = values, fill = labels)) +
  geom_bar(position = "stack", stat = "identity", width = 0.7) +
  geom_text(data = filtered_data, aes(label = sprintf("%.2f%%", draw_percent)),
            position = position_stack(vjust = 0.5), size = 3) +
  coord_polar(theta = "y") +
  xlab("") +
  ylab("Pie Chart") +
  scale_fill_manual(values = c("#e64b35ff","#4dbbd5ff","#00a087ff","#3c5488ff","#f39b7fff")) +
  theme_minimal() +
  theme(text = element_text(family = "Arial"),
        plot.title = element_text(size = 12,hjust = 0.5),
        axis.title = element_text(size = 12),
        axis.text = element_text(size = 10),
        axis.text.x = element_text(color = "black"),
        axis.text.y = element_blank(),
        legend.position = "right",
        legend.direction = "vertical",
        legend.title = element_text(size = 10),
        legend.text = element_text(size = 10),
        panel.grid.major = element_blank(),
        panel.grid.minor = element_blank())

p