Renaming columns according to vector inside pipe
I have a data.frame df with columns A and B:
df <- data.frame(A = 1:5, B = 11:15)
There's another data.frame, df2, which I'm building by various calculations that ends up having generic column names X1 and X2, which I cannot control directly (because it passes through being a matrix at one point). So it ends up being something like:
mtrx <- matrix(1:10, ncol = 2)
mtrx %>% data.frame()
I would like to rename the columns in df2 to be the same as df. I could, of course, do it after I finish building df2 with a simple assigning:
names(df2)<-names(df)
My question is - is there a way to do this directly within the pipe? I can't seem to use dplyr::rename, because these have to be in the form of newname=oldname, and I can't seem to vectorize it. Same goes to the data.frame call itself - I can't just give it a vector of column names, as far as I can tell. Is there another option I'm missing? What I'm hoping for is something like
mtrx %>% data.frame() %>% rename(names(df))
but this doesn't work - gives error Error: All arguments must be named.
Cheers!
r pipe
edited Nov 18 '18 at 7:38
markus
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
add a comment |
I have a data.frame df with columns A and B:
df <- data.frame(A = 1:5, B = 11:15)
There's another data.frame, df2, which I'm building by various calculations that ends up having generic column names X1 and X2, which I cannot control directly (because it passes through being a matrix at one point). So it ends up being something like:
mtrx <- matrix(1:10, ncol = 2)
mtrx %>% data.frame()
I would like to rename the columns in df2 to be the same as df. I could, of course, do it after I finish building df2 with a simple assigning:
names(df2)<-names(df)
My question is - is there a way to do this directly within the pipe? I can't seem to use dplyr::rename, because these have to be in the form of newname=oldname, and I can't seem to vectorize it. Same goes to the data.frame call itself - I can't just give it a vector of column names, as far as I can tell. Is there another option I'm missing? What I'm hoping for is something like
mtrx %>% data.frame() %>% rename(names(df))
but this doesn't work - gives error Error: All arguments must be named.
Cheers!
r pipe
edited Nov 18 '18 at 7:38
markus
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
add a comment |
I have a data.frame df with columns A and B:
df <- data.frame(A = 1:5, B = 11:15)
There's another data.frame, df2, which I'm building by various calculations that ends up having generic column names X1 and X2, which I cannot control directly (because it passes through being a matrix at one point). So it ends up being something like:
mtrx <- matrix(1:10, ncol = 2)
mtrx %>% data.frame()
I would like to rename the columns in df2 to be the same as df. I could, of course, do it after I finish building df2 with a simple assigning:
names(df2)<-names(df)
My question is - is there a way to do this directly within the pipe? I can't seem to use dplyr::rename, because these have to be in the form of newname=oldname, and I can't seem to vectorize it. Same goes to the data.frame call itself - I can't just give it a vector of column names, as far as I can tell. Is there another option I'm missing? What I'm hoping for is something like
mtrx %>% data.frame() %>% rename(names(df))
but this doesn't work - gives error Error: All arguments must be named.
Cheers!
r pipe
edited Nov 18 '18 at 7:38
markus
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
I have a data.frame df with columns A and B:
df <- data.frame(A = 1:5, B = 11:15)
There's another data.frame, df2, which I'm building by various calculations that ends up having generic column names X1 and X2, which I cannot control directly (because it passes through being a matrix at one point). So it ends up being something like:
mtrx <- matrix(1:10, ncol = 2)
mtrx %>% data.frame()
I would like to rename the columns in df2 to be the same as df. I could, of course, do it after I finish building df2 with a simple assigning:
names(df2)<-names(df)
My question is - is there a way to do this directly within the pipe? I can't seem to use dplyr::rename, because these have to be in the form of newname=oldname, and I can't seem to vectorize it. Same goes to the data.frame call itself - I can't just give it a vector of column names, as far as I can tell. Is there another option I'm missing? What I'm hoping for is something like
mtrx %>% data.frame() %>% rename(names(df))
but this doesn't work - gives error Error: All arguments must be named.
Cheers!
r pipe
r pipe
edited Nov 18 '18 at 7:38
markus
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
edited Nov 18 '18 at 7:38
markus
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
edited Nov 18 '18 at 7:38
markus
11.9k1234
edited Nov 18 '18 at 7:38
markus
11.9k1234
edited Nov 18 '18 at 7:38
markus
11.9k1234
11.9k1234
asked Nov 18 '18 at 6:42
iodiod
3,8332722
asked Nov 18 '18 at 6:42
iodiod
3,8332722
asked Nov 18 '18 at 6:42
iodiod
3,8332722
3,8332722
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
We can use rename_all from tidyverse
library(tidyverse)
mtrx %>%
as.data.frame %>%
rename_all(~ names(df))
# A B
# 1 1 6
# 2 2 7
# 3 3 8
# 4 4 9
# 5 5 10
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
add a comment |
You can use setNames
mtrx %>%
data.frame() %>%
setNames(., nm = names(df))
# A B
#1 1 6
#2 2 7
#3 3 8
#4 4 9
#5 5 10
Or use purrr's equivalent set_names
mtrx %>%
data.frame() %>%
purrr::set_names(., nm = names(df))
A third option is "names<-"
mtrx %>%
data.frame() %>%
"names<-"(names(df))
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
We can use rename_all from tidyverse
library(tidyverse)
mtrx %>%
as.data.frame %>%
rename_all(~ names(df))
# A B
# 1 1 6
# 2 2 7
# 3 3 8
# 4 4 9
# 5 5 10
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
add a comment |
We can use rename_all from tidyverse
library(tidyverse)
mtrx %>%
as.data.frame %>%
rename_all(~ names(df))
# A B
# 1 1 6
# 2 2 7
# 3 3 8
# 4 4 9
# 5 5 10
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
add a comment |
We can use rename_all from tidyverse
library(tidyverse)
mtrx %>%
as.data.frame %>%
rename_all(~ names(df))
# A B
# 1 1 6
# 2 2 7
# 3 3 8
# 4 4 9
# 5 5 10
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
We can use rename_all from tidyverse
library(tidyverse)
mtrx %>%
as.data.frame %>%
rename_all(~ names(df))
# A B
# 1 1 6
# 2 2 7
# 3 3 8
# 4 4 9
# 5 5 10
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
answered Nov 18 '18 at 20:55
akrunakrun
406k13196270
406k13196270
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
add a comment |
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
1
1
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
That's what I was looking for! Thanks
– iod
Nov 18 '18 at 21:15
add a comment |
You can use setNames
mtrx %>%
data.frame() %>%
setNames(., nm = names(df))
# A B
#1 1 6
#2 2 7
#3 3 8
#4 4 9
#5 5 10
Or use purrr's equivalent set_names
mtrx %>%
data.frame() %>%
purrr::set_names(., nm = names(df))
A third option is "names<-"
mtrx %>%
data.frame() %>%
"names<-"(names(df))
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
add a comment |
You can use setNames
mtrx %>%
data.frame() %>%
setNames(., nm = names(df))
# A B
#1 1 6
#2 2 7
#3 3 8
#4 4 9
#5 5 10
Or use purrr's equivalent set_names
mtrx %>%
data.frame() %>%
purrr::set_names(., nm = names(df))
A third option is "names<-"
mtrx %>%
data.frame() %>%
"names<-"(names(df))
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
add a comment |
You can use setNames
mtrx %>%
data.frame() %>%
setNames(., nm = names(df))
# A B
#1 1 6
#2 2 7
#3 3 8
#4 4 9
#5 5 10
Or use purrr's equivalent set_names
mtrx %>%
data.frame() %>%
purrr::set_names(., nm = names(df))
A third option is "names<-"
mtrx %>%
data.frame() %>%
"names<-"(names(df))
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
You can use setNames
mtrx %>%
data.frame() %>%
setNames(., nm = names(df))
# A B
#1 1 6
#2 2 7
#3 3 8
#4 4 9
#5 5 10
Or use purrr's equivalent set_names
mtrx %>%
data.frame() %>%
purrr::set_names(., nm = names(df))
A third option is "names<-"
mtrx %>%
data.frame() %>%
"names<-"(names(df))
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
edited Nov 18 '18 at 7:44
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
answered Nov 18 '18 at 7:37
markusmarkus
11.9k1234
11.9k1234
add a comment |
add a comment |
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