np.argmax()返回数组中最大值的索引。 6. 查找满足条件的第一个值的索引 有时我们只需要找到满足条件的第一个值的索引。 importnumpyasnp arr=np.array([1,2,3,4,5,3,7,8,9])first_index=np.where(arr==3)[0][0]print("numpyarray.com: First index of value 3:",first_index) Python Copy ...
[-0.28790332, -0.96139749, -0.75098725, 0.14987721]]) >>> # index of the maxima for each series >>> ind = data.argmax(axis=0) >>> ind array([2, 0, 3, 1]) >>> # times corresponding to the maxima >>> time_max = time[ind] >>> >>> data_max = data[ind, range(data....
np.maxnp.nanmax Find maximum value np.argmin np.nanargmin Find index of minimum value np.argmax np.nanargmax Find index of maximum value np.median np.nanmedian Compute median of elements np.percentile np.nanpercentile Compute rank-based statistics of elements np.anyN/A Evaluate whetheranye...
np.maxnp.nanmaxFind maximum value np.argminnp.nanargminFind index of minimum value np.argmaxnp.nanargmaxFind index of maximum value np.mediannp.nanmedianCompute median of elements np.percentilenp.nanpercentileCompute rank-based statistics of elements np.anyN/AEvaluate whether any elements are ...
importnumpyasnp# 创建一个随机数组array=np.random.rand(10)print("Array:",array)# 使用argmax找出最大值的索引index_of_max=np.argmax(array)print("Index of max value:",index_of_max) Python Copy Output: 示例代码 2: 二维数组中使用argmax ...
arr_2.argmax() #This shows the index of the highest value in the array arr_2.argmin() #This shows the index of the lowest value in the array 假设存在大量数组，而你需要弄清楚数组的形态，你想知道这个数组是一维数组还是二维数组，只需要使用 shape 函数即可：arr.shape 从 NumPy 数组中索引／...
>>> data.max() 6 >>> data.min() 1 >>> data.sum() 21 ../_images/np_matrix_aggregation.png 你可以聚合矩阵中的所有值,你还可以使用axis参数沿行或列进行聚合。为了说明这一点,让我们看一个稍微修改过的数据集: 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 >>> data = np...
[-0.28790332, -0.96139749, -0.75098725, 0.14987721]]) >>> # index of the maxima for each series >>> ind = data.argmax(axis=0) >>> ind array([2, 0, 3, 1]) >>> # times corresponding to the maxima >>> time_max = time[ind] >>> >>> data_max = data[ind, range(data....
False# with a tolerance of 0.2, it should return True:np.allclose(array1,array2,0.2)True 2. argpartition()NumPy的这个函数非常优秀，可以找到N最大值索引。输出N最大值索引，然后根据需要，对值进行排序。x = np.array([12, 10, 12, 0, 6, 8, 9, 1, 16, 4, 6,0])index_val = np....
120. Get Index of Max Element Along AxisWrite a NumPy program to get the index of a maximum element in a NumPy array along one axis.Sample Output:Original array:[[1 2 3] [4 3 1]]Index of a maximum element in a NumPy array along one axis:4...