我有一个 xarray 数据集ds
<xarray.Dataset>
Dimensions: (elevation_band: 4, latitude: 1, longitude: 1)
Coordinates:
* longitude (longitude) float64 -111.4
* latitude (latitude) float64 44.51
* elevation_band (elevation_band) int32 1 2 3 4
Data variables:
area_frac (elevation_band, latitude, longitude) float64 0.005109 ...
mean_elev (elevation_band, latitude, longitude) float64 2.45e+03 ...
prec_frac (elevation_band, latitude, longitude) float64 0.005109 ...
我想替换的值mean_elev
具有这些值[0.1, 0.2, 0.3, 0.4]
导致这个错误:
Trial 1
ds['mean_elev'].values = np.atleast_3d([0.1, 0.5, 0.3, 0.6]).reshape((4, 1, 1))
Error 2
MissingDimensionsError: cannot set variable 'mean_elev' with 3-dimensional data without explicit dimension names. Pass a tuple of (dims, data) instead.
Trial 2
到目前为止,我尝试创建一个单独的 dataArray 进行合并:
lat = ds['latitude'].values
long = ds['longitude'].values
elevation_band = ds['elevation_band'].values
mean_elev = np.array([0.1, 0.5, 0.3, 0.6]).reshape((4, 1, 1))
xr.DataArray(mean_elev, coords={'latitude': lat, 'longitude': long,
'elevation_band': elevation_band},
dims=['latitude', 'longitude', 'elevation_band'])
Error 2
ValueError: conflicting sizes for dimension 'latitude': length 4 on the data but length 1 on coordinate 'latitude'
接受替代解决方案或使其中之一发挥作用。