mutate: Mutate columns in data.frame
In tidyfst: Tidy Verbs for Fast Data Manipulation
mutate_dt R Documentation
Mutate columns in data.frame
Description
Adds or updates columns in data.frame.
Usage
mutate_dt(.data, ..., by)
transmute_dt(.data, ..., by)
Arguments
.data
data.frame
...
List of variables or name-value pairs of summary/modifications
functions.
by
(Optional) Mutate by what group?
Value
data.table
See Also
mutate
Examples
iris %>% mutate_dt(one = 1,Sepal.Length = Sepal.Length + 1)
iris %>% transmute_dt(one = 1,Sepal.Length = Sepal.Length + 1)
# add group number with symbol `.GRP`
iris %>% mutate_dt(id = 1:.N,grp = .GRP,by = Species)
tidyfst documentation built on Sept. 16, 2024, 9:06 a.m.
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| mutate_dt | R Documentation |
Mutate columns in data.frame
Description
Adds or updates columns in data.frame.
Usage
mutate_dt(.data, ..., by)
transmute_dt(.data, ..., by)
Arguments
.data |
data.frame |
... |
List of variables or name-value pairs of summary/modifications functions. |
by |
(Optional) Mutate by what group? |
Value
data.table
See Also
mutate
Examples
iris %>% mutate_dt(one = 1,Sepal.Length = Sepal.Length + 1)
iris %>% transmute_dt(one = 1,Sepal.Length = Sepal.Length + 1)
# add group number with symbol `.GRP`
iris %>% mutate_dt(id = 1:.N,grp = .GRP,by = Species)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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