dplyr

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Count unique values by group
user_56191710
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8
3
115
dplyr r
Combine character strings into a single string by group in R
user_19684840
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1
4
72
dplyr r
Expand each group to the max n of rows
user_133216470
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7
8
188
expand dplyr r
Summary statistics with grouping by multiple columns dataframe vs. data.table vs. dplyr
user_44626900
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2
2
120
summarize data.table dplyr r
Speeding up group_by operations dplyr
user_126034920
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4
4
130
data.table dplyr r
Find n-1 closest values based on criteria in a dataframe in R
user_197522560
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1
1
54
closest dplyr dataframe r
Expand x axis once you have negative value, but you want to show it as a positive value
user_144042940
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1
1
19
dplyr ggplot2 r
Group by the position and not by the name of a column in a dataframe
user_91982600
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2
2
30
dplyr r
Which groups have exactly the same rows
user_184297720
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1
2
48
tidyr dplyr r
R: Add numeric sequence including negative values starting from middle of group
user_197489080
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1
3
38
dplyr dataframe r
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