Tabulate column containing list in R
0
I am using sapply (or lapply for what matters here) to tabulate the classes of a data frame.
f<-as.POSIXct(c("2014-10-02","2016-11-05","2014-09-11"))
dd<-c(1,12,22)
fr<-c("coo","foo","doo")
df<-cbind.data.frame(f,dd,fr)
c<-sapply(df,class)
This generates an error when, as for the case of the posixct class, the class in a list of 2 elements.
table(c)
Error in table(c) : all arguments must have the same length
c
$`f`
[1] "POSIXct" "POSIXt"
$dd
[1] "numeric"
$fr
[1] "factor"
Obviously unlist will not work as the double class is then counted as 2 separate classes.
How do I collapse the double class in a unitary element here?
r list dataframe
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
add a comment |
0
I am using sapply (or lapply for what matters here) to tabulate the classes of a data frame.
f<-as.POSIXct(c("2014-10-02","2016-11-05","2014-09-11"))
dd<-c(1,12,22)
fr<-c("coo","foo","doo")
df<-cbind.data.frame(f,dd,fr)
c<-sapply(df,class)
This generates an error when, as for the case of the posixct class, the class in a list of 2 elements.
table(c)
Error in table(c) : all arguments must have the same length
c
$`f`
[1] "POSIXct" "POSIXt"
$dd
[1] "numeric"
$fr
[1] "factor"
Obviously unlist will not work as the double class is then counted as 2 separate classes.
How do I collapse the double class in a unitary element here?
r list dataframe
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
1
c <- sapply(df, function(x) class(x)[1])But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.
– hrbrmstr
Nov 24 '18 at 17:49
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
1
c <- sapply(df, function(x) paste0(class(x), collapse="-"))
– hrbrmstr
Nov 24 '18 at 18:40
add a comment |
0
0
0
I am using sapply (or lapply for what matters here) to tabulate the classes of a data frame.
f<-as.POSIXct(c("2014-10-02","2016-11-05","2014-09-11"))
dd<-c(1,12,22)
fr<-c("coo","foo","doo")
df<-cbind.data.frame(f,dd,fr)
c<-sapply(df,class)
This generates an error when, as for the case of the posixct class, the class in a list of 2 elements.
table(c)
Error in table(c) : all arguments must have the same length
c
$`f`
[1] "POSIXct" "POSIXt"
$dd
[1] "numeric"
$fr
[1] "factor"
Obviously unlist will not work as the double class is then counted as 2 separate classes.
How do I collapse the double class in a unitary element here?
r list dataframe
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
I am using sapply (or lapply for what matters here) to tabulate the classes of a data frame.
f<-as.POSIXct(c("2014-10-02","2016-11-05","2014-09-11"))
dd<-c(1,12,22)
fr<-c("coo","foo","doo")
df<-cbind.data.frame(f,dd,fr)
c<-sapply(df,class)
This generates an error when, as for the case of the posixct class, the class in a list of 2 elements.
table(c)
Error in table(c) : all arguments must have the same length
c
$`f`
[1] "POSIXct" "POSIXt"
$dd
[1] "numeric"
$fr
[1] "factor"
Obviously unlist will not work as the double class is then counted as 2 separate classes.
How do I collapse the double class in a unitary element here?
r list dataframe
r list dataframe
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
edited Nov 24 '18 at 17:45
Brian Tompsett - 汤莱恩
4,2331338101
4,2331338101
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
asked Nov 24 '18 at 17:42
La Machine InfernaleLa Machine Infernale
17429
17429
1
c <- sapply(df, function(x) class(x)[1])But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.
– hrbrmstr
Nov 24 '18 at 17:49
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
1
c <- sapply(df, function(x) paste0(class(x), collapse="-"))
– hrbrmstr
Nov 24 '18 at 18:40
add a comment |
1
c <- sapply(df, function(x) class(x)[1])But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.
– hrbrmstr
Nov 24 '18 at 17:49
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
1
c <- sapply(df, function(x) paste0(class(x), collapse="-"))
– hrbrmstr
Nov 24 '18 at 18:40
1
1
c <- sapply(df, function(x) class(x)[1]) But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.– hrbrmstr
Nov 24 '18 at 17:49
c <- sapply(df, function(x) class(x)[1]) But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.– hrbrmstr
Nov 24 '18 at 17:49
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
1
1
c <- sapply(df, function(x) paste0(class(x), collapse="-"))– hrbrmstr
Nov 24 '18 at 18:40
c <- sapply(df, function(x) paste0(class(x), collapse="-"))– hrbrmstr
Nov 24 '18 at 18:40
add a comment |
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1
c <- sapply(df, function(x) class(x)[1])But you have not mentioned how you want to handle multiple classed objects. This solution assumes you only are about the "left-most" / Primary one.– hrbrmstr
Nov 24 '18 at 17:49
@RichScriven "Obviously unlist will not work as the double class is then counted as 2 separate classes"
– hrbrmstr
Nov 24 '18 at 18:15
@hrbrmstr Thanks that was helpful, I guess it works fine like that, but is there any way to collapse the two elements in a single one preserving them both?
– La Machine Infernale
Nov 24 '18 at 18:31
1
c <- sapply(df, function(x) paste0(class(x), collapse="-"))– hrbrmstr
Nov 24 '18 at 18:40