shuffling/permutating a DataFrame in pandas 繁体
2013年04月02 - What's a simple and efficient way to shuffle a dataframe in pandas, by rows or by columns? I.e. how to write a function shuffle(df, n, axis=0) that ta

Unexpected memory error when regriding data with scipy interpolate griddata method 繁体
2014年08月06 - I have a 3000x6000 2D grid (from a tiff image). I want to regrid it into a lower resolution grid using griddata method from scipy.interpolate library.

How to create new values in a pandas dataframe column based on values from another column 繁体
2017年10月03 - I have a pandas dataframe of values I read in from a csv file. I have a column labeled 'SleepQuality' and the values are float from 0.0 - 100.0. I wan

numpy教程：数学函数和基本统计函数 繁体
2014年11月17 - http://blog.csdn.net/pipisorry/article/details/39235767 [python模块：数字处理模块math] numpy数学函数 NumPy提供常见的如sin,cos和exp 更多函数all, alltrue, any, apply along axis

How to add a Numpy Array to a dictionary 繁体
2017年11月12 - How to add two numpy arrays to a dictionary in python ? 如何在python中向字典中添加两个numpy数组? a = [[1] [3]] b = [array([[[ 41., 179.], [ 451

[开源库学习] Numpy日记 Section.1 繁体

python学习笔记（二）：numpy基础 繁体
2018年03月04 - Counter函数可以对列表中数据进行统计每一个有多少种 most_common(10)可以提取前十位 from collections import Countera = ['q','q','w','w','w']count = Counter(a)count.most_common(

NumPy Beginner's Guide》笔记Chapter8 繁体
2016年04月05 - # -*- coding: utf-8 -*- import numpy as np __author__ = 'ZengDong' #日期 = 15:04 """ Some programmers test only in production. If you are not one of

NumPy 复制和视图 繁体
2017年01月17 - 复制和视图 当运算和处理数组时，它们的数据有时被拷贝到新的数组有时不是。这通常是新手的困惑之源。这有三种情况: 完全不拷贝 简单的赋值不拷贝数组对象或它们的数据。 >>> a = arange(12)>>> b = a # no

How to set cells of matrix from matrix of columns indexes 繁体
2017年10月06 - I'd like to build a kernel from a list of positions and list of kernel centers. The kernel should be an indicator of the TWO closest centers to each p