np.nan_to_num(array,nan=100,posinf=999999,neginf=0)) 输出: [nan+infj-inf+0.j] Shapeofthe arrayis:(2,) Thedimensionofthe arrayis:1 DatatypeofourArrayis:complex128 Afterreplacement the arrayis:[100.+999999.j0.+0.j] 注:本文由VeryToolz翻译自Python NumPy - Replace NaN with zero and...
# 输出替换结果以进行验证print("替换结果如下:",data_with_no_nan)# 输出最终的数组 1. 2. 类图 为了更好地理解以上操作,下面是一个类图,显示了 NumPy 中相关的类和方法之间的关系。 NumPy+array()+nan()+nan_to_num()NaNValue+replace_with_zero() 结尾 通过本文的指导,您已经学习了如何使用 Python ...
Replace nan with zero and inf with large finite numbers. Ifxis inexact, NaN is replaced by zero,and infinity and -infinity replaced by the respectively largest and most negative finite floating point values representable by x.dtype. For complex dtypes, the above is applied to each of the real...
numpy.isnan(element) Note: 不能使用array[0] == np.NaN,总是返回False! numpy数组元素替换numpy.nan_to_num(x) 判断某元素是否是nan,inf,neginf,如果是,nan换为0,inf换为一个非常大的数,neginf换为非常小的数 numpy.nan_to_num(x)Replace nan with zero and inf with finite numbers.Returns an a...
Python program to replace -inf with zero value in NumPy array # Import numpyimportnumpyasnpfromnumpyimportinf# Creating a numpy arrayarr=np.array([-inf,-inf,3,7,4,9,6,6,8,5,7,9])# Display original arrayprint("Original array:\n",arr,"\n")# replacing -inf with 0arr[np.isneginf...
dataArr[nonzero(isnan(dataArr[:,i].A))[0],i] = meanVal return dataArr if __name__ == '__main__': # 加载数据集 dataArr = loadDataSet(r'../xxx.txt',' ') # 均值填充缺失值 replaceNanwithMean(dataArr) datamat = loadDataSet(r'../xxx.txt',' ') ...
Suppose we are given a NumPy array with some nan values and we want to replace these nan values with zeroes. Converting nan value to zero For this purpose, we will use theisnan()method which produces a bool array indicating where the NaN values are. A boolean array can be used to inde...
代码中出现 nan,nan 在numpy 中表示的是 Not a Number,说明计算有问题,代码 not_zero_mask = data[:, new_recovered_idx] != 0 避免除数为 0 的情况。 六 平均值和标准差 # 平均值, 标准差 ratio_mean = ratio.mean() ratio_std = ratio.std() print("平均比例:", ratio_mean, ";标准差:",...
numpy.nanargmax numpy.argmin numpy.nanargmin numpy.argwhere numpy.nonzero numpy.flatnonzero numpy.where numpy.searchsorted numpy.extract numpy.count_nonzero 统计学 numpy.ptp numpy.percentile numpy.nanpercentile numpy.quantile numpy.nanquantile numpy.median numpy.average numpy.mean numpy.std numpy.var...
默认情况下,分隔符为空格 numpy.char.splitlines() # 函数以换行符作为分隔符来分割字符串,并返回数组 numpy.char.strip() # 函数用于移除开头或结尾处的特定字符 numpy.char.join() # 函数通过指定分隔符来连接数组中的元素或字符串 numpy.char.replace() # 函数使用新字符串替换字符串中的所有子字符串 numpy...