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Is python's sorted() function guaranteed to be stable?
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Alex MartelliAlex Martelli
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How exactly does a generator comprehension work?
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147
Do you understand list comprehensions? If so, a generator expression is like a list comprehensi...
How to export plots from matplotlib with transparent background?
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edited Feb 7 '14 at 15:18
answered Apr 7 '13 at 1:51
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COUNT DISTINCT with CONDITIONS
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edited Nov 12 '19 at 14:04
answered Dec 27 '12 at 0:58
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Relative frequencies / proportions with dplyr
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mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That makes it easy to prog...
How can I switch to a tag/branch in hg?
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edited Oct 18 '14 at 17:56
anatoly techtonik
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How to make an element in XML schema optional?
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Dmitry KudryavtsevDmitry Kudryavtsev
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How can I find my Apple Developer Team id and Team Agent Apple ID?
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Luten
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answered Sep 10 '13 at 20:13
Grzegorz Krukows...
How can I improve my paw detection?
...never actually displayed)
im = ax.imshow(infile.next()[1])
# Make 4 rectangles that we can later move to the position of each paw
rects = [Rectangle((0,0), 1,1, fc='none', ec='red') for i in range(4)]
[ax.add_patch(rect) for rect in rects]
title = ax.set_title('Time 0.0 ms')
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