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How to convert index of a pandas dataframe into a column?
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either:
df['index1'] = df.index
or, .reset_index:
df.reset_index(level=0, inplace=True)
so, if you have a multi-index frame with 3 levels of index, like:
>>> df
val
tick tag obs
2016-02-26...
lua和c/c++互相调用实例分析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...引，索引值为负时表示相对于栈顶的偏移索引，索引值以1或-1为起始值，因此栈顶索引值永远为-1 ,栈底索引值永远为1 。 "栈"相当于数据在lua和c/c++之间的中转地。每种数据都有相应的存取接口 。
数据入"栈"接口：
void (lua_push...
Difference between Math.Floor() and Math.Truncate()
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12 Answers
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How do I get Flask to run on port 80?
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14 Answers
14
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Why does range(start, end) not include end?
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251
Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contains...
How can I count the number of matches for a regex?
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177
matcher.find() does not find all matches, only the next match.
Solution for Java 9+
long mat...
Controlling maven final name of jar artifact
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edited May 23 '17 at 10:31
Community♦
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answered Jan 23 '13 at 22:34
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Shading a kernel density plot between two points.
... the quantile values to get the actual (x,y) pairs.
Edit: Here you go:
x1 <- min(which(dens$x >= q75))
x2 <- max(which(dens$x < q95))
with(dens, polygon(x=c(x[c(x1,x1:x2,x2)]), y= c(0, y[x1:x2], 0), col="gray"))
Output (added by JDL)
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