print(indices_of_30) # 输出 (array([2, 4]),) 输出是一个元组,包含一个数组,该数组表示满足条件的元素索引。 多维数组 numpy的where()函数也可以用于多维数组,返回的结果则是每个维度的索引。 my_2d_array = np.array([[10, 20, 30], [40, 30, 50]]) indices_of_30 = np.where(my_2d_array...
您可以使用列表理解: result = [val for i in range(0, len(a), 6) for val in a[i:i+3]] Numpy array transformation 按照@Naga kiran的建议做,然后用原始数组中的值替换上采样数组中的值,怎么样? import numpy as nparr = np.array([4.62236694, 4.62236910, 4.62237128, 4.62237562,])upsamle = ...
AI代码解释 In[19]:dfOut[19]:a b016122258s=pd.Series([5,8],index=['a','b'])# df的 index=2等于s,所以为 Trues1=pd.Series([89,8],index=['a','b'])# False
array1 = np.array([[11, 22, 33, 44, 55], [66, 77, 88, 99, 100]]): Create a 2D NumPy array with given values. i: Define a list of column indices representing the desired order of columns. array1[:,i]: Rearrange the columns of array1 according to the specified order in i....
How to make a 2d NumPy array a 3d array? How to get the determinant of a matrix using NumPy? How to get the element-wise mean of a NumPy ndarray? How to count values in a certain range in a NumPy array? Elementwise multiplication of a scipy.sparse matrix by a broadcasted dense 1d...
Python code to index a NumPy array with another NumPy array # Import numpyimportnumpyasnp# Creating some numpy arrayarr1=np.array([1,0]) arr2=np.array([[1,2],[3,4]])# Display original arraysprint("Original array 1:\n",arr1,"\n")print("Original array 2:\n",arr2,"\n")# ...
index_select(a, dim = 0, index = torch.tensor([2, 3]))) tensor([2, 3]) >>> # 创建2D张量 >>> b = torch.arange(0, 9).view([3, 3]) >>> print(b) tensor([[0, 1, 2], [3, 4, 5], [6, 7, 8]]) >>> # 获取2D张量的第2个维度且索引号为0和1的张量子集(第一列...
Describe the issue: Trying to index a StringDType array of shape (1, 1), where the single string has length more than 15, using a list results in a MemoryError. This also happens when indexing with an array. Specifically, this error appe...
Python Numpy 2d array slicing minus index to plus index数字和形状是相同的，但strides不同（一个是...
Fix theIndexError: invalid index to scalar variablein 2D Numpy Arrays When you understand the working of an array, then two-dimensional is not a big deal to understand indices, and you are good to go. Let’s take an example of a 2-Dnumpyarray. ...