绘制两个数据框列，第三列为x轴

import matplotlib.pyplot as plt

# 假设有两个数据框df1和df2，分别有两列数据col1和col2
df1 = pd.DataFrame({'col1': [1, 2, 3, 4, 5], 'col2': [10, 20, 30, 40, 50]})
df2 = pd.DataFrame({'col1': [6, 7, 8, 9, 10], 'col2': [60, 70, 80, 90, 100]})

# 绘制两个数据框列，第三列为x轴
plt.plot(df1['col1'], df1['col2'], label='Data Frame 1')
plt.plot(df2['col1'], df2['col2'], label='Data Frame 2')
plt.xlabel('X轴')
plt.ylabel('Y轴')
plt.legend()
plt.show()

library(ggplot2)

# 假设有两个数据框df1和df2，分别有两列数据col1和col2
df1 <- data.frame(col1 = c(1, 2, 3, 4, 5), col2 = c(10, 20, 30, 40, 50))
df2 <- data.frame(col1 = c(6, 7, 8, 9, 10), col2 = c(60, 70, 80, 90, 100))

# 绘制两个数据框列，第三列为x轴
ggplot() +
  geom_line(data = df1, aes(x = col1, y = col2), color = "blue", linetype = "solid", label = "Data Frame 1") +
  geom_line(data = df2, aes(x = col1, y = col2), color = "red", linetype = "solid", label = "Data Frame 2") +
  labs(x = "X轴", y = "Y轴") +
  theme_minimal()