是否有一种方法可以将单位从小时数转换为几天到this dataset?
double time(time) ;
time:units = "hours since 1800-01-01 00:00:0.0" ;
time:long_name = "Time" ;
time:delta_t = "0000-01-00 00:00:00" ;
time:avg_period = "0000-01-00 00:00:00" ;
time:standard_name = "time" ;
time:axis = "T" ;
time:actual_range = 1569072., 1895592. ;
答案 0 :(得分:-1)
如果你可以使用Python,这是一个简单的过程:
第一步是使用netCDF4 num2date将数字日期转换为日期时间对象。
第二步是计算每个日期时间对象与time
变量(即1800-01-01)中的时间戳(或原始日期)之间的天数。
import netCDF4
import datetime
ncfile = netCDF4.Dataset('./precip.mon.mean.nc', 'r')
time = ncfile.variables['time']
# Convert from numeric times to datetime objects
dates = netCDF4.num2date(time[:], time.units)
# Compute number of days since the original date
orig_date = datetime.datetime(1800,1,1)
days_since = [(t - orig_date).days for t in dates]