问题描述
我的问题：
cftime._cftime.DatetimeGregorian”对象没有属性“ ndim”。
我使用netCDF4读取了带有（time_coord，lat，lon）的NC数据集。带有以下内容的Timestamp_utc
information:double ddm_timestamp_utc(sample=3568,x=50,y=50);
:long_name = "DDM sample timestamp - UTC";
:standard_name = "time";
:calendar = "gregorian";
:comment = "DDM sample time. The number of seconds since time_coverage_start with nanosecond resolution. Its position relative to the DDM sampling period is determined by ddm_time_type_selector. Some Metadata required for DDM calibration are generated relative to pvt_timestamp_utc or att_timestamp_utc. These Metadata are interpolated to ddm_timestamp_utc before being used for DDM calibration. Note that the DDM sampling period is not synchronized with the UTC change of second and can occur at any time relative to the UTC change of second.";
:units = "seconds since 2016-01-01 00:00:00.0"
我尝试阅读以下代码：
nc_time = nc.variables['ddm_timestamp_utc'][:,i,j]
units = nc.variables['ddm_timestamp_utc'].units
calendar = nc.variables['ddm_timestamp_utc'].calendar
tt =[np.datetime64(num2date(t,units,calendar=calendar)).astype(datetime)
for t in nc_time] time = np.ma.array(tt,mask=nc_time.mask)
cftime._cftime.DatetimeGregorian”对象没有属性“ ndim”
在以下行中：
tt =[np.datetime64(num2date(t,calendar=calendar)).astype(datetime) for t in nc_time].
我想这个问题可能是由netCDF（1.5.3）或python版本（我尝试过3.7和3.8）引起的
解决方法
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