xarray乘法运算后数组的形状不正确 [英] Incorrect shape of array after xarray multiplication operation

问题描述

按照将xarray变量与二维numpy数组

import xarray as xr
hndl_tran = xr.open_dataset(path_netcdf, chunks={'time': 10})
flow_data = hndl_tran['val']
new_arr = flow_data * xr.DataArray(vba)

这是输入数组的形状

flow_data.shape
(1165, 720, 1440)

vba.shape
(720L, 1440L)

这是相乘后数组的形状:

Here is the shape of the array after multiplying:

new_arr.shape
(1165, 720, 1440, 720, 1440)

我希望所得数组具有与flow_data相同的形状.我该怎么做?

I want the resulting array to have same shape as flow_data. How do i do this?

推荐答案

xarray根据数组的尺寸对齐形状.因此，如果维度不共享名称，则乘法将创建所有维度的并集.

xarray aligns the shapes based on the dimensions of the array. So if the dimensions don't share names, the multiplication is going to create a union of all dimensions.

我想flow_data和vba具有不同的命名尺寸-使用.rename将匹配的尺寸设置为匹配的名称

I imagine flow_data and vba have differently named dimensions - use .rename to set matching dimensions to matching names

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