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Repeat each row of data.frame the number of times specified in a column
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175
Here's one solution:
df.expanded <- df[rep(row.names(df), df$freq), 1:2]
Result:
var1...
Working with huge files in VIM
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85
I had a 12GB file to edit today. The vim LargeFile plugin did not work for me. It still used up ...
ValueError: setting an array element with a sequence
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answered Jan 12 '11 at 23:51
Sven MarnachSven Marnach
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Getting the class name of an instance?
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Boris
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answered Feb 4 '09 at 12:02
sykorasykora
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How can I recover the return value of a function passed to multiprocessing.Process?
...anager()
return_dict = manager.dict()
jobs = []
for i in range(5):
p = multiprocessing.Process(target=worker, args=(i,return_dict))
jobs.append(p)
p.start()
for proc in jobs:
proc.join()
print return_dict.values()
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Compare a string using sh shell
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edited May 5 '15 at 21:08
the Tin Man
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how to reference a YAML “setting” from elsewhere in the same YAML file?
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vavavava
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1
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Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of
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156
I had the exact same problem.
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2...
How to retrieve all keys (or values) from a std::map and put them into a vector?
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Jere.JonesJere.Jones
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how to POST/Submit an Input Checkbox that is disabled?
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edited May 6 '15 at 0:18
answered Jan 18 '11 at 19:11
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