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How to create a density plot in matplotlib?
...s np
from scipy.stats import gaussian_kde
data = [1.5]*7 + [2.5]*2 + [3.5]*8 + [4.5]*3 + [5.5]*1 + [6.5]*8
density = gaussian_kde(data)
xs = np.linspace(0,8,200)
density.covariance_factor = lambda : .25
density._compute_covariance()
plt.plot(xs,density(xs))
plt.show()
I get
which is pretty clos...
Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...
89
This doesn't answer your question directly, but it will give you the elements that are in commo...
Why are Python lambdas useful? [closed]
...tuff. Example:
mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])
sets mult3 to [3, 6, 9], those elements of the original list that are multiples of 3. This is shorter (and, one could argue, clearer) than
def filterfunc(x):
return x % 3 == 0
mult3 = filter(filterfunc, [1, 2, 3...
CMake使用教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ingcmake.html
CMake使用步骤：
运行GUI的cmake界面：
cmake-2.8.1-win32-x86/bin/cmake-gui.exe
执行Configure：
运行之后，生成了如下文件：
生成Makefile：
执行Generate之后生成如下文件：
运行make进行编译：
编译完成后，在build目录...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
...
86
General numeric sort compares the numbers as floats, this allows scientific notation eg 1.234E1...
How to merge lists into a list of tuples?
...
8 Answers
8
Active
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...存储架构（主从模式）
http://blog.chinaunix.net/uid-25266990-id-3803277.html
DRBD使用gfs2,cman实现双主分布式文件存储方案
http://blog.sae.sina.com.cn/archives/3609
2.1搭建实验环境了
所需要的软件
REHL 6.4
drbd-8.4.6.tar.gz
drbd-utils-8.9.3.ta...
Clean ways to write multiple 'for' loops
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281
The first thing is that you don't use such a data structure. If
you need a three dimensional m...
Selecting with complex criteria from pandas.DataFrame
...>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 900
3 8 80 900
4 7 50 200
5 9 30 900
6 2 80 700
7 2 80 400
8 5 80 300
9 7 70 800
We can apply column operations and get boolean Series objects:
>>> df["B"] > 50
0 False
1 True
2 True
3 ...
Memoization in Haskell?
...fficiently the following function in Haskell, for large numbers (n > 108)
8 Answers
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