dplyr

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Left join by group and condition (`tidyverse` or `data.table`)
user_54597290
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2
3
50
data.table dplyr tidyverse r join
Fill a column down, recursively applying a function to the previous value
user_51411960
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2
3
61
tidyr dplyr tidyverse r
Find a the value in one group that corresponds to the maximum value in another, then subtract that value from another column
user_128601670
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3
3
47
dplyr dataframe r
geom_point() + geom_boxplot() for different colour/fill variable?
user_111755940
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1
1
48
geom-point dplyr boxplot ggplot2
R: Create one single column out of two seperate ones
user_186998830
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1
4
83
dplyr r
Filter grouped data with specific column value
user_197746210
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1
3
33
dplyr r
Selecting top 5 rows along with keeping a certain row fixed
user_141908660
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2
2
43
dplyr tidyverse dataframe r
Removing a prefix from a subset of column names using the str_remove function
user_47276990
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1
2
59
stringr dplyr tidyverse r
Use mutate and case_when on a group of variables
user_128601670
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1
1
46
dplyr r
Add column from a character vector if missing from df in a list of dfs
user_149928570
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2
3
39
dplyr dataframe r for-loop
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