将非标准维度的netCDF转换为标准netCDF (ltime,lat,lon) 可以通过以下步骤实现:
import netCDF4 as nc
import numpy as np
ncfile = nc.Dataset('non_standard.nc', 'r')
data = ncfile.variables['data'][:]
ltime = ncfile.variables['ltime'][:]
lat = ncfile.variables['lat'][:]
lon = ncfile.variables['lon'][:]
standard_ncfile = nc.Dataset('standard.nc', 'w', format='NETCDF4')
standard_ncfile.createDimension('ltime', len(ltime))
standard_ncfile.createDimension('lat', len(lat))
standard_ncfile.createDimension('lon', len(lon))
standard_data = standard_ncfile.createVariable('data', 'f4', ('ltime', 'lat', 'lon'))
standard_data[:] = data
standard_ltime = standard_ncfile.createVariable('ltime', 'f4', ('ltime',))
standard_ltime[:] = ltime
standard_lat = standard_ncfile.createVariable('lat', 'f4', ('lat',))
standard_lat[:] = lat
standard_lon = standard_ncfile.createVariable('lon', 'f4', ('lon',))
standard_lon[:] = lon
ncfile.close()
standard_ncfile.close()
这样就完成了将非标准维度的netCDF转换为标准netCDF的过程。在这个过程中,我们使用了netCDF4库来读取和写入netCDF文件,使用了numpy库来处理数据。通过创建标准netCDF文件并定义维度,然后将非标准维度的数据和坐标写入到标准netCDF文件中,实现了转换。
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