默认地图

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默认地图#

默认地图 (cedarkit.maps.map.default.DefaultMapLoader) 使用 Cartopy 内置的 NaturalEarthFeature 绘制海岸线、陆地、河流和湖泊，使用开源项目 china-shapefiles 中国地图绘制中国边界、省界和南海九段线。 china-shapefiles 项目已内置在 cedarkit-maps 的资源目录 resources 中，无需单独安装。

准备#

导入需要的包

import numpy as np
import pandas as pd
import matplotlib.colors as mcolors
  
from cedarkit.maps.chart import Panel
from cedarkit.maps.domains import EastAsiaMapTemplate
from cedarkit.maps.map import set_default_map_loader_package
from cedarkit.maps.style import ContourStyle

定义绘图样式

map_colors = np.array([
    (255, 255, 255),
    (0, 0, 0),
    (255, 255, 255),
    (0, 200, 200),
    (0, 210, 140),
    (0, 220, 0),
    (160, 230, 50),
    (230, 220, 50),
    (230, 175, 45),
    (240, 130, 40),
    (250, 60, 60),
    (240, 0, 130),
    (0, 0, 255),
    (255, 140, 0),
    (238, 18, 137)
], dtype=float) / 255
colormap = mcolors.ListedColormap(map_colors)
  
wind_speed_colormap = mcolors.ListedColormap(
    colormap(np.array([2, 3, 4, 5, 6, 7, 8, 9, 10, 11]))
)
wind_speed_contour_lev = np.array(
    [3.4, 5.5, 8, 10.8, 13.9, 17.2, 20.8, 24.5, 28.5]
)
wind_speed_style = ContourStyle(
    colors=wind_speed_colormap,
    levels=wind_speed_contour_lev,
    fill=True,
)

绘制#

绘制地图

domain = EastAsiaMapTemplate()
panel = Panel(domain=domain)
  
domain.set_title(
    panel=panel,
    graph_name="10m Wind, 10m Wind Speed(m/s, shadow)",
    system_name="CMA-MESO",
    start_time=pd.to_datetime("2024-11-14 00:00"),
    forecast_time=pd.to_timedelta("24h"),
)
domain.add_colorbar(panel=panel, style=wind_speed_style)

panel.show()
../../_images/b74e889fe5b14024756f5b93f1a7485f191951bc14b4fbbb423b1b4c30012c35.png
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