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Naming returned columns in Pandas aggregate function? [duplicate]
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107
This will drop the outermost level from the hierarchical column index:
df = data.groupby(...)....
Case preserving substitute in Vim
...toMark Lodato
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16
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dropping infinite values from dataframes in pandas?
...nf, -np.inf])
In [12]: df.replace([np.inf, -np.inf], np.nan)
Out[12]:
0
0 1
1 2
2 NaN
3 NaN
The same method would work for a Series.
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How to count the number of true elements in a NumPy bool array
...xample:
>>> import numpy as np
>>> boolarr = np.array([[0, 0, 1], [1, 0, 1], [1, 0, 1]], dtype=np.bool)
>>> boolarr
array([[False, False, True],
[ True, False, True],
[ True, False, True]], dtype=bool)
>>> np.sum(boolarr)
5
Of course, that is ...
Multi-gradient shapes
...ze(int width, int height) {
LinearGradient lg = new LinearGradient(0, 0, width, height,
new int[]{Color.GREEN, Color.GREEN, Color.WHITE, Color.WHITE},
new float[]{0,0.5f,.55f,1}, Shader.TileMode.REPEAT);
return lg;
}
};
PaintDrawable p=new PaintDrawable()...
Count work days between two dates
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306
For workdays, Monday to Friday, you can do it with a single SELECT, like this:
DECLARE @StartD...
Making WPF applications look Metro-styled, even in Windows 7? (Window Chrome / Theming / Theme)
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+100
What I did was creating my own Window and Style. Because I like to have control over everything and I didn't want some external libra...
Validate phone number with JavaScript
...alidates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
26 Answers
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How to remove convexity defects in a Sudoku square?
...Y = ImageMultiply[MorphologicalBinarize[GaussianFilter[srcAdjusted, 3, {2, 0}], {0.02, 0.05}], mask];
lX = ImageMultiply[MorphologicalBinarize[GaussianFilter[srcAdjusted, 3, {0, 2}], {0.02, 0.05}], mask];
I use connected component analysis again to extract the grid lines from these images. The g...
Count occurrences of a char in plain text file
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edited Oct 21 '09 at 21:45
answered Oct 21 '09 at 21:37
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