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Mean per group in a data.frame [duplicate]
...egate(d[, 3:4], list(d$Name), mean)
Group.1 Rate1 Rate2
1 Aira 16.33333 47.00000
2 Ben 31.33333 50.33333
3 Cat 44.66667 54.00000
Here we aggregate columns 3 and 4 of data.frame d, grouping by d$Name, and applying the mean function.
Or, using a formula interface:
aggregate(....
How to convert DateTime to VarChar
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answered Sep 16 '08 at 16:52
TonyOssaTonyOssa
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Modify/view static variables while debugging in Eclipse
...clipse.
– Rushabh Shah
Nov 2 '15 at 16:31
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What does “Content-type: application/json; charset=utf-8” really mean?
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deceze♦deceze
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4
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How to see full symlink path
...s a relative path
– timoxley
Apr 9 '16 at 15:19
2
This question was about Linux, y'all.
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How do you read a file into a list in Python? [duplicate]
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edited Oct 13 '10 at 16:13
answered Oct 13 '10 at 16:08
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How to explicitly discard an out argument?
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answered Nov 30 '16 at 13:49
NolonarNolonar
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git update-index --assume-unchanged on directory
...y.
– Václav Slavík
May 9 '13 at 8:16
7
@twalberg: You could just use git ls-files -z
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Ruby on Rails: how do I sort with two columns using ActiveRecord?
... asc, `order` asc")
– grant
May 25 '16 at 18:36
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Use ffmpeg to add text subtitles [closed]
...w if I want on demand?
– Sun
Jan 2 '16 at 6:36
3
Yes @sunk818 that's what this means. This adds t...