Python cartopy -手动更改颜色栏标签

import matplotlib.pyplot as plt
import cartopy.crs as ccrs
import cartopy.feature as cfeature

fig = plt.figure(figsize=(10, 6))
ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())

# 添加地图特征
ax.add_feature(cfeature.COASTLINE)
ax.add_feature(cfeature.BORDERS)
ax.add_feature(cfeature.LAND)
ax.add_feature(cfeature.OCEAN)

# 绘制地理数据
data = [1, 2, 3, 4, 5]  # 示例数据
cmap = plt.cm.get_cmap('RdYlBu')  # 颜色映射
norm = plt.Normalize(min(data), max(data))  # 数据归一化

# 绘制地理数据的颜色填充
ax.pcolormesh(lon, lat, data, cmap=cmap, norm=norm)

# 设置颜色栏
cbar = plt.colorbar(ax=ax, orientation='vertical', shrink=0.8)
cbar.set_label('Data Label')  # 设置颜色栏标签