# Install packages
if (!requireNamespace("ggplot2", quietly = TRUE)) {
install.packages("ggplot2")
}
# Load packages
library(ggplot2)
Barcode Plot
Barcode Plot is Suitable for displaying the distribution of large amounts of data.
Setup
System Requirements: Cross-platform (Linux/MacOS/Windows)
Programming language: R
Dependent packages:
ggplot2
Data Preparation
The case data represents the sales revenue of a certain product in 500 stores in three regions.
# Load data
<- read.table("files/Hiplot/002-barcode-plot-data.txt", header = T)
data # View data
head(data)
region sales
1 GuangDong 42.54612
2 GuangDong 46.26102
3 GuangDong 46.00448
4 GuangDong 45.05684
5 GuangDong 48.67611
6 GuangDong 56.95071
Visualization
# Barcode Plot
<- ggplot(data, aes(x = sales, y = region)) +
p geom_tile(width = 0.01, height = 0.9, fill = "#606fcc") + # Control the width and height of the Barcode
theme_bw() +
labs(title = "Sales report", x = "Sales", y = "Region") +
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(angle = 0, hjust = 0.5,vjust = 1),
legend.position = "right",
legend.direction = "vertical",
legend.title = element_text(size = 10),
legend.text = element_text(size = 10))
p

Through the barcode plot, we can observe that the number of stores with sales revenue around 50 is relatively high in Guangdong and Fujian regions. Additionally, the sales revenue among stores in Guangdong shows less variation, indicating a more concentrated distribution.
Tip
Special Parameters:
- width: Width of the bars
- height: Height of the bars
- fill: Color of the bars