甘特图

作者

[编辑] 郑虎;

[审核] .

甘特图是一种用来说明项目进度条形图。

环境配置

  • 系统: Cross-platform (Linux/MacOS/Windows)

  • 编程语言: R

  • 依赖包: tidyverse; ggthemes

# 安装包
if (!requireNamespace("tidyverse", quietly = TRUE)) {
  install.packages("tidyverse")
}
if (!requireNamespace("ggthemes", quietly = TRUE)) {
  install.packages("ggthemes")
}

# 加载包
library(tidyverse)
library(ggthemes)

数据准备

载入数据为 4 个样本即四位患者，3 个项目即 3 种治疗方法，以及每种治疗方法的起止时间。

# 加载数据
data <- read.delim("files/Hiplot/059-gantt-data.txt", header = T)

# 整理数据格式
usr_ylab <- colnames(data)[1]
if (!is.numeric(data[, 2])) {
  data[, 2] <- factor(data[, 2], levels = unique(data[, 2]))
}
data_gather <- gather(data, "state", "date", 3:4)
sample <- levels(data_gather$sample)
data_gather$sample <- factor(data_gather$sample,
  levels = rev(unique(data_gather$sample))
)

# 查看数据
head(data_gather)
    sample   item state date
1 patient1 treat1 start    1
2 patient2 treat1 start    2
3 patient2 treat2 start    5
4 patient2 treat3 start    7
5 patient3 treat3 start    6
6 patient3 treat1 start    3

可视化

# 甘特图
p <- ggplot(data_gather, aes(date, sample, color = item)) +
  geom_line(size = 10, alpha = 1) +
  labs(x = "Time", y = "sample", title = "Gantt Plot") +
  theme(axis.ticks = element_blank()) +
  scale_color_manual(values = c("#e04d39","#5bbad6","#1e9f86")) +
  theme_stata() +
  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
图 1: 甘特图

横轴表示时间进度，纵轴表示 4 位患者，3 种颜色表示 3 种治疗方法，该图可以观测到每位患者不同治疗方法使用的时间进度。