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Python Infinity - Any caveats?
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edited Oct 27 '09 at 0:45
answered Oct 27 '09 at 0:31
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Assign multiple columns using := in data.table, by group
... hi hello 3.5 7 14 21
# 3: 3 3 hi hello 4.5 9 18 27
# 4: 1 4 hi hello 2.5 5 10 15
# 5: 2 5 hi hello 3.5 7 14 21
# 6: 3 6 hi hello 4.5 9 18 27
x[ , get("mynames") := list(mean(b) * 4, sum(b) * 3), by = a][] # same
# a b col1 co...
Why does Convert.ToString(null) return a different value if you cast null?
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answered Apr 27 '12 at 18:13
JaredParJaredPar
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Add legend to ggplot2 line plot
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answered Apr 27 '12 at 10:57
csgillespiecsgillespie
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“git diff” does nothing
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answered Aug 27 '10 at 0:59
DouglasDouglas
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Show MySQL host via SQL Command
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edited Nov 27 '11 at 3:19
answered Nov 27 '11 at 2:44
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pandas DataFrame: replace nan values with average of columns
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You can simply use DataFrame.fillna to fill the nan's directly:
In [27]: df
Out[27]:
A B C
0 -0.166919 0.979728 -0.632955
1 -0.297953 -0.912674 -1.365463
2 -0.120211 -0.540679 -0.680481
3 NaN -2.027325 1.533582
4 NaN NaN 0.461821
5 -0.788073 ...
Difference between subprocess.Popen and os.system
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answered Jan 27 '11 at 6:56
Jacob MarbleJacob Marble
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Extracting numbers from vectors of strings
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answered Jan 27 '13 at 1:51
ArunArun
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Elegant method to generate array of random dates within two dates
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answered Jan 27 '12 at 15:29
Tomasz NurkiewiczTomasz Nurkiewicz
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