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Aggregate / summarize multiple variables per group (e.g. sum, mean)
...~ variable, sum)
# year month x1 x2
1 2000 1 -80.83405 -224.9540159
2 2000 2 -223.76331 -288.2418017
3 2000 3 -188.83930 -481.5601913
4 2000 4 -197.47797 -473.7137420
5 2000 5 -259.07928 -372.4563522
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How can I do an asc and desc sort using underscore.js?
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365
You can use .sortBy, it will always return an ascending list:
_.sortBy([2, 3, 1], function(nu...
How to make rounded percentages add up to 100%
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34
Since none of the answers here seem to solve it properly, here's my semi-obfuscated version usi...
Add Variables to Tuple
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388
Tuples are immutable; you can't change which variables they contain after construction. Howeve...
Simple way to create matrix of random numbers
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13 Answers
13
Active
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Why do objects of the same class have access to each other's private data?
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edited Aug 3 '11 at 3:31
answered Aug 3 '11 at 3:26
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pandas: How do I split text in a column into multiple rows?
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This splits the Seatblocks by space and gives each its own row.
In [43]: df
Out[43]:
CustNum CustomerName ItemQty Item Seatblocks ItemExt
0 32363 McCartney, Paul 3 F04 2:218:10:4,6 60
1 31316 Lennon, John 25 F01 1:13:36:1...
How to upgrade PowerShell version from 2.0 to 3.0
...t is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0?
7 Answers
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Best GUI designer for eclipse? [closed]
...are
edited Jun 10 '12 at 23:23
Andrew Marshall
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