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For each row return the column name of the largest value
... sample reproducible):
DF <- data.frame(V1=c(2,8,1),V2=c(7,3,5),V3=c(9,6,4))
colnames(DF)[apply(DF,1,which.max)]
[1] "V3" "V1" "V2"
A faster solution than using apply might be max.col:
colnames(DF)[max.col(DF,ties.method="first")]
#[1] "V3" "V1" "V2"
...where ties.method can be any of "ran...
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The BrewmasterThe Brewmaster
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How to use the “required” attribute with a “radio” input field
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edited May 7 at 10:36
answered Nov 27 '11 at 18:31
Se...
make arrayList.toArray() return more specific types
...t<String>();
String[] a = list.toArray(new String[0]);
Before Java6 it was recommended to write:
String[] a = list.toArray(new String[list.size()]);
because the internal implementation would realloc a properly sized array anyway so you were better doing it upfront. Since Java6 the empty ...
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163
You could compose Enumerable#reduce and Hash#merge to accomplish what you want.
input = [{"tes...
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edited Apr 24 '16 at 22:07
Merlyn Morgan-Graham
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How do you know when to use fold-left and when to use fold-right?
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edited Feb 9 '14 at 6:21
codygman
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answered Se...
How to make Twitter Bootstrap tooltips have multiple lines?
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Determining whether jQuery has not found any element
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answered May 20 '10 at 20:46
futuraprimefuturaprime
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Visual Studio, Find and replace, regex
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edited Nov 24 '14 at 16:19
Stormenet
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