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 ...
np.max np.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.any N/A Evaluate whether ...
np.max np.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.any N/A Evaluate whether ...
np.prod np.nanprod Compute product of elements np.mean np.nanmean Compute mean of elements np.std np.nanstd Compute standard deviation np.var np.nanvar Compute variance np.min np.nanmin Find minimum value np.max np.nanmax Find maximum value np.argmin np.nanargmin Find index of minimum v...
max(iterable, *[, default=obj, key=func]) -> valuemax(arg1, arg2, *args, *[, key=func]) -> valueWith a single iterable argument, return its biggest item. Thedefault keyword-only argument specifies an object to return ifthe provided iterable is empty.With two or more arguments, ...
numpy.argmax()函数的基本用法非常简单。给定一个数组,它可以返回数组中最大元素的索引。如果数组是多维的,可以指定轴(axis)来找到每个子数组中最大元素的索引。 示例代码1:一维数组 importnumpyasnp arr=np.array([1,3,2,7,4])index_of_max=np.argmax(arr)print("Index of max value:",index_of_max)...
[-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....
# max minus mix lambda fnfn = lambda x: x.max() - x.min()# Apply this on dframe that we've just created abovedframe.apply(fn) isin() lsin () 用于过滤数据帧。Isin () 有助于选择特定列中具有特定(或多个)值的行。 # Using the dataframe ...
原文:numpy.org/doc/1.26/user/index.html 本指南是一个概述,解释了重要特性;细节请参阅 NumPy 参考文档。 开始入门 什么是 NumPy? 原文:numpy.org/doc/1.26/user/whatisnumpy.html NumPy 是 Python 中科学计算的基础包。 这是一个提供多维数组对象、各种派生对象(如掩码数组和矩阵)以及一系列用于数组快速操...
使用 argmax() 和 argmin() 函数，我们可以定位数组中最大值和最小值的索引：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...