cedar-graph

使用 cedarkit-maps 开发的绘图示例包。

快速绘图

绘制 2 米温度填充图

from cedar_graph.quickplot import quick_plot

plot_type = "cn.t_2m.default"
plot_settings = dict(
    system_name="CMA-GFS",
    start_time="2024073000",
    forecast_time="48h",
)

quick_plot(
    plot_type=plot_type,
    **plot_settings,
)

绘制区域 10 米风场填充图

from cedar_graph.quickplot import quick_plot
from cedarkit.maps.util import AreaRange

plot_type = "cn.wind_10m.default"
plot_settings = dict(
    system_name="CMA-MESO",
    start_time="2024073000",
    forecast_time="48h",
    area_name="NorthEast",
    area_range=AreaRange.from_tuple((108, 137, 37, 55))
)

quick_plot(
    plot_type=plot_type,
    **plot_settings,
)

绘图模块

使用绘图模块的函数和类实现图形绘制

import pandas as pd

from cedar_graph.plots.cn.t_2m.default import PlotMetadata, plot, load_data
from cedar_graph.data import LocalDataSource, DataLoader

system_name = "CMA-MESO"
start_time = pd.to_datetime("2024-07-17 00:00:00")
forecast_time = pd.to_timedelta("24h")

metadata = PlotMetadata(
    start_time=start_time,
    forecast_time=forecast_time,
    system_name=system_name
)

# system -> field
data_source = LocalDataSource(system_name=system_name)
data_loader = DataLoader(data_source=data_source)
plot_data = load_data(
    data_loader=data_loader, 
    start_time=start_time, 
    forecast_time=forecast_time
)
    
# field -> plot
panel = plot(
    plot_data=plot_data,
    plot_metadata=metadata,
)

# plot -> output
panel.show()

绘图清单

类别	名称	说明
常规
	height_500_mslp	500hPa高度场+海平面气压
	height_500_wind_850	500hPa高度场+850hPa风场
	t_2m	2米温度
	wind_10m	10米风场
诊断
	radar_reflectivity	雷达组合反射率
	div_wind	散度+风场
	k_wind	K指数+风场
	cin_wind	CIN+风场
	cape_wind	CAPE+风场
	bpli_wind	最优抬升指数+风场
	pte_wind	500hPa与850hPa假相当位温之差+风场
	qv_div	水汽通量散度
	shr	垂直风切变 (0-1km/0-3km/0-6km)
	t_dew_t	温度和露点差
降水
	prep_24h	24小时降水 (多相态)
	rain_24h	24小时降水
	rain_wind_10m	1/3/6/12/24小时降水+10米风场

LICENSE

Copyright © 2024, developers at cemc-oper.

cedar-graph is licensed under Apache License V2.0