全球区域 - cedarkit-notebook指南

全球区域底图布局 (cedarkit.plots.domains.GlobalAreaMapTemplate) 绘制全球范围任意区域的图形，继承自全球底图布局 (GlobalMapDomain)，并增加了国境线。

准备¶

导入需要的包

import numpy as np
import pandas as pd

from cedarkit.plots.chart import Panel
from cedarkit.plots.domains import GlobalAreaMapTemplate
from cedarkit.plots.map import set_default_map_loader_package
from cedarkit.plots.style import ContourStyle
from cedarkit.plots.colormap import get_ncl_colormap
from cedarkit.plots.types import AreaRange

start_time = pd.Timestamp.now().normalize() - pd.Timedelta(days=2)
forecast_time = pd.to_timedelta("24h")

设置使用 CEMC 地图包

set_default_map_loader_package("cedarkit.plots.map.cemc")

'cedarkit.plots.map.cemc'

定义绘图样式

t_contour_lev = np.array([0, 4, 8, 12, 16, 20, 24, 28, 32, 36])
colormap = get_ncl_colormap(
    "WhBlGrYeRe", index=np.array([2, 8, 14, 20, 45, 55, 65, 72, 80, 90, 100]))
t_style = ContourStyle(
    colors=colormap,
    levels=t_contour_lev,
    fill=True,
)

绘制¶

定义绘图区域

area = AreaRange.from_tuple((45, 110, -10, 45))

绘制底图布局

domain = GlobalAreaMapTemplate(area=area)
panel = Panel(domain=domain)

domain.set_title(
    panel=panel,
    graph_name=r"2m Temperature ($^\circ$C,shadow)",
    system_name="CMA-GFS",
    start_time=start_time,
    forecast_time=pd.Timedelta(hours=24),
)
domain.add_colorbar(panel, style=t_style)

panel.show()