cedar-graph
A plotting example package using cedarkit-plots.
Install
Install using pip.
pip install cedar-graph
Or download the latest source code from GitHub repo and install the latest version.
Quick plot
quick_plot can be used in CMA-HPC to draw and show picture using data from CEMC's NWP systems.
Draw contour fill plot for 2m temperature using CMA-GFS GRIB2 data.
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,
)
Draw wind speed contour fill plot for 10m wind using CMA-MESO GRIB2 data.
from cedar_graph.quickplot import quick_plot
from cedarkit.plots.types 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,
)
Manual plot
Use functions and classed in plotting modules to draw plots.
The following example runs at CMA-HPC.
First, create a LocalDataSource object to get data file path from CMA-MESO at CMA-HPC.
Next, use load_data and plot functions from cedar_graph.plots.t_2m.default module to draw a plot.
Finally, use panel.show() method to display the result.
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()
Graph list
| Category | Plot Type | Introduction | 说明 |
|---|---|---|---|
| Normal | |||
| height_500_mslp | 500hPa geopotential height + Sea level pressure | 500hPa高度场+海平面气压 | |
| height_500_wind_850 | 500hPa geopotential height + 850hPa wind | 500hPa高度场+850hPa风场 | |
| t_2m | 2m temperature | 2米温度 | |
| rh_2m | 2m relative humidity | 2米相对湿度 | |
| wind_10m | 10m wind | 10米风场 | |
| Diagnosis | |||
| radar_reflectivity | Composite radar reflectivity | 雷达组合反射率 | |
| div_wind | Divergence + Wind | 散度+风场 | |
| k_wind | K Index + Wind | K指数+风场 | |
| cin_wind | CIN + Wind | CIN+风场 | |
| cape_wind | CAPE + Wind | CAPE+风场 | |
| bli_wind | Best lifted index + Wind | 最优抬升指数 + 风场 | |
| pte_wind | Difference in pseudo-equivalent potential temperature between 500hPa and 850hPa + Wind | 500hPa与850hPa假相当位温之差+风场 | |
| qv_div | Moisture flux divergence | 水汽通量散度 | |
| shr | Vertical wind shear (0-1km/0-3km/0-6km) | 垂直风切变 (0-1km/0-3km/0-6km) | |
| t_dew_t | Temperature-dew point difference | 温度和露点差 | |
| Rain | |||
| prep_24h | 24h precipitation (precipitation phase) | 24小时降水 (多相态) | |
| rain_24h | 24h rain | 24小时降水 | |
| rain_wind_10m | 1/3/6/12/24h rain + 10m wind | 1/3/6/12/24小时降水+10米风场 |
LICENSE
Copyright © 2024-2026, developers at cemc-oper.
cedar-graph is licensed under Apache License V2.0
1 maintainer
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