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How to sort a character vector where elements contain letters and numbers in R?
The Next CEO of Stack OverflowOrder colnames by char + numberOrder data.frame after numbers within character column in ROrdering character values while preserving number orderSorting A Character Dataframe According to desired waysort strings by numbers inside themArrange column in data framehow to group rows without ordering?Sorting character vector containing semantic versionsHow to sort by Library of Congress Classification (LCC) number in RSort a dataframe based on a character column containing letters followed by numbers in RHow do I sort a list of dictionaries by a value of the dictionary?How do I sort a dictionary by value?How do I sort an NSMutableArray with custom objects in it?How to sort a dataframe by multiple column(s)?Java Array Sort descending?Sorting an array in descending order in RubyHow to Sort Multi-dimensional Array by Value?How to Sort a List<T> by a property in the objectGrouping functions (tapply, by, aggregate) and the *apply familySwift Beta performance: sorting arrays
I have a character array
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
I would like to sort it in descending order so that I will have an output like this:
V51
V108
V116
V120
V155
V217
V327
V440
V446
V457
V477
I have tried sort.list() like this
cf[sort.list(cf)]
and got this answer:
[1] "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477" "V51"
and also tried order() and got same result.
Can someone help me please
r sorting
edited Jan 25 at 7:47
Old Pro
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
add a comment |
I have a character array
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
I would like to sort it in descending order so that I will have an output like this:
V51
V108
V116
V120
V155
V217
V327
V440
V446
V457
V477
I have tried sort.list() like this
cf[sort.list(cf)]
and got this answer:
[1] "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477" "V51"
and also tried order() and got same result.
Can someone help me please
r sorting
edited Jan 25 at 7:47
Old Pro
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
add a comment |
I have a character array
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
I would like to sort it in descending order so that I will have an output like this:
V51
V108
V116
V120
V155
V217
V327
V440
V446
V457
V477
I have tried sort.list() like this
cf[sort.list(cf)]
and got this answer:
[1] "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477" "V51"
and also tried order() and got same result.
Can someone help me please
r sorting
edited Jan 25 at 7:47
Old Pro
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
I have a character array
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
I would like to sort it in descending order so that I will have an output like this:
V51
V108
V116
V120
V155
V217
V327
V440
V446
V457
V477
I have tried sort.list() like this
cf[sort.list(cf)]
and got this answer:
[1] "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477" "V51"
and also tried order() and got same result.
Can someone help me please
r sorting
r sorting
edited Jan 25 at 7:47
Old Pro
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
edited Jan 25 at 7:47
Old Pro
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
edited Jan 25 at 7:47
Old Pro
15.3k23970
edited Jan 25 at 7:47
Old Pro
15.3k23970
edited Jan 25 at 7:47
Old Pro
15.3k23970
15.3k23970
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
asked Jul 8 '13 at 16:19
rinzy kutexrinzy kutex
5421512
5421512
add a comment |
add a comment |
6 Answers
6
active
oldest
votes
Try mixedsort from the "gtools" package:
> # install.packages("gtools") ## Uncomment if not already installed
> library(gtools)
> mixedsort(cf)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
If you don't want to use mixedsort (not sure why one wouldn't), and if your vector has a pretty consistent pattern (eg letters followed by numbers), you can also probably try something like this. (Note: Relatively untested.)
newvec <- c("V440", "V457", "V116", "V327", "V446", "V108", "V155",
"V217", "V120", "V51", "V477", "B22", "A10", "Z01")
newvec[order(gsub("([A-Z]+)([0-9]+)", "\1", newvec),
as.numeric(gsub("([A-Z]+)([0-9]+)", "\2", newvec)))]
# [1] "A10" "B22" "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440"
# [11] "V446" "V457" "V477" "Z01"
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
add a comment |
Plenty of right answers here, this is another way, just for fun.
cf[order(nchar(cf), cf)]
# [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
add a comment |
One more solution in a line of code using str_sortfunction (from the stringr packg.)
# install.packages("stringr") ## Uncomment if not already installed
library(stringr)
str_sort(cf, numeric = TRUE)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 29 '18 at 9:48
JDieJDie
9612
1
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
add a comment |
Just scrape off the preceding "V" character to build a sorting vector. No additional fancy tools required.
vals <- as.numeric(gsub("V","", cf))
cf[order(vals)]
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446"
[10] "V457" "V477"
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
add a comment |
R correctly orders strings alphabetically, that is why you get that result.
Aside from @Ananda very good answer, if you want to use base R you can use strsplit to remove the "V" from each string and then use as.numeric to cast the strings to integers:
vals <- as.numeric(sapply(cf, FUN=function(x)strsplit(x, "V")[[1]][2]))
Now you can sort your strings using vals
cf[order(vals)]
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
add a comment |
Here's a base approach utilizing names and sort (Ananda's was pretty slick):
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
cf2 <- as.numeric(gsub("[^[:digit:]]", "", cf))
names(cf2) <- seq_along(cf2)
cf[as.numeric(names(sort(cf2)))]
## > cf[as.numeric(names(sort(cf2)))]
## [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327"
## [8] "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
add a comment |
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6 Answers
6
active
oldest
votes
6 Answers
6
active
oldest
votes
active
oldest
votes
active
oldest
votes
Try mixedsort from the "gtools" package:
> # install.packages("gtools") ## Uncomment if not already installed
> library(gtools)
> mixedsort(cf)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
If you don't want to use mixedsort (not sure why one wouldn't), and if your vector has a pretty consistent pattern (eg letters followed by numbers), you can also probably try something like this. (Note: Relatively untested.)
newvec <- c("V440", "V457", "V116", "V327", "V446", "V108", "V155",
"V217", "V120", "V51", "V477", "B22", "A10", "Z01")
newvec[order(gsub("([A-Z]+)([0-9]+)", "\1", newvec),
as.numeric(gsub("([A-Z]+)([0-9]+)", "\2", newvec)))]
# [1] "A10" "B22" "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440"
# [11] "V446" "V457" "V477" "Z01"
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
add a comment |
Try mixedsort from the "gtools" package:
> # install.packages("gtools") ## Uncomment if not already installed
> library(gtools)
> mixedsort(cf)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
If you don't want to use mixedsort (not sure why one wouldn't), and if your vector has a pretty consistent pattern (eg letters followed by numbers), you can also probably try something like this. (Note: Relatively untested.)
newvec <- c("V440", "V457", "V116", "V327", "V446", "V108", "V155",
"V217", "V120", "V51", "V477", "B22", "A10", "Z01")
newvec[order(gsub("([A-Z]+)([0-9]+)", "\1", newvec),
as.numeric(gsub("([A-Z]+)([0-9]+)", "\2", newvec)))]
# [1] "A10" "B22" "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440"
# [11] "V446" "V457" "V477" "Z01"
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
add a comment |
Try mixedsort from the "gtools" package:
> # install.packages("gtools") ## Uncomment if not already installed
> library(gtools)
> mixedsort(cf)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
If you don't want to use mixedsort (not sure why one wouldn't), and if your vector has a pretty consistent pattern (eg letters followed by numbers), you can also probably try something like this. (Note: Relatively untested.)
newvec <- c("V440", "V457", "V116", "V327", "V446", "V108", "V155",
"V217", "V120", "V51", "V477", "B22", "A10", "Z01")
newvec[order(gsub("([A-Z]+)([0-9]+)", "\1", newvec),
as.numeric(gsub("([A-Z]+)([0-9]+)", "\2", newvec)))]
# [1] "A10" "B22" "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440"
# [11] "V446" "V457" "V477" "Z01"
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
Try mixedsort from the "gtools" package:
> # install.packages("gtools") ## Uncomment if not already installed
> library(gtools)
> mixedsort(cf)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
If you don't want to use mixedsort (not sure why one wouldn't), and if your vector has a pretty consistent pattern (eg letters followed by numbers), you can also probably try something like this. (Note: Relatively untested.)
newvec <- c("V440", "V457", "V116", "V327", "V446", "V108", "V155",
"V217", "V120", "V51", "V477", "B22", "A10", "Z01")
newvec[order(gsub("([A-Z]+)([0-9]+)", "\1", newvec),
as.numeric(gsub("([A-Z]+)([0-9]+)", "\2", newvec)))]
# [1] "A10" "B22" "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440"
# [11] "V446" "V457" "V477" "Z01"
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
edited Jul 8 '13 at 16:42
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
answered Jul 8 '13 at 16:21
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
154k19291384
154k19291384
add a comment |
add a comment |
Plenty of right answers here, this is another way, just for fun.
cf[order(nchar(cf), cf)]
# [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
add a comment |
Plenty of right answers here, this is another way, just for fun.
cf[order(nchar(cf), cf)]
# [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
add a comment |
Plenty of right answers here, this is another way, just for fun.
cf[order(nchar(cf), cf)]
# [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
Plenty of right answers here, this is another way, just for fun.
cf[order(nchar(cf), cf)]
# [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
answered Jul 8 '13 at 16:35
Matthew PlourdeMatthew Plourde
35.5k469101
35.5k469101
add a comment |
add a comment |
One more solution in a line of code using str_sortfunction (from the stringr packg.)
# install.packages("stringr") ## Uncomment if not already installed
library(stringr)
str_sort(cf, numeric = TRUE)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 29 '18 at 9:48
JDieJDie
9612
1
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
add a comment |
One more solution in a line of code using str_sortfunction (from the stringr packg.)
# install.packages("stringr") ## Uncomment if not already installed
library(stringr)
str_sort(cf, numeric = TRUE)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 29 '18 at 9:48
JDieJDie
9612
1
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
add a comment |
One more solution in a line of code using str_sortfunction (from the stringr packg.)
# install.packages("stringr") ## Uncomment if not already installed
library(stringr)
str_sort(cf, numeric = TRUE)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 29 '18 at 9:48
JDieJDie
9612
One more solution in a line of code using str_sortfunction (from the stringr packg.)
# install.packages("stringr") ## Uncomment if not already installed
library(stringr)
str_sort(cf, numeric = TRUE)
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446" "V457" "V477"
answered Jul 29 '18 at 9:48
JDieJDie
9612
answered Jul 29 '18 at 9:48
JDieJDie
9612
answered Jul 29 '18 at 9:48
JDieJDie
9612
answered Jul 29 '18 at 9:48
JDieJDie
9612
9612
1
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
add a comment |
1
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
1
1
this is great..
– FMM
Oct 1 '18 at 17:21
this is great..
– FMM
Oct 1 '18 at 17:21
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
thanks! happy to help.
– JDie
Nov 15 '18 at 18:26
add a comment |
Just scrape off the preceding "V" character to build a sorting vector. No additional fancy tools required.
vals <- as.numeric(gsub("V","", cf))
cf[order(vals)]
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446"
[10] "V457" "V477"
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
add a comment |
Just scrape off the preceding "V" character to build a sorting vector. No additional fancy tools required.
vals <- as.numeric(gsub("V","", cf))
cf[order(vals)]
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446"
[10] "V457" "V477"
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
add a comment |
Just scrape off the preceding "V" character to build a sorting vector. No additional fancy tools required.
vals <- as.numeric(gsub("V","", cf))
cf[order(vals)]
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446"
[10] "V457" "V477"
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
Just scrape off the preceding "V" character to build a sorting vector. No additional fancy tools required.
vals <- as.numeric(gsub("V","", cf))
cf[order(vals)]
[1] "V51" "V108" "V116" "V120" "V155" "V217" "V327" "V440" "V446"
[10] "V457" "V477"
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
answered Jul 8 '13 at 16:24
David MarxDavid Marx
5,15012449
5,15012449
add a comment |
add a comment |
R correctly orders strings alphabetically, that is why you get that result.
Aside from @Ananda very good answer, if you want to use base R you can use strsplit to remove the "V" from each string and then use as.numeric to cast the strings to integers:
vals <- as.numeric(sapply(cf, FUN=function(x)strsplit(x, "V")[[1]][2]))
Now you can sort your strings using vals
cf[order(vals)]
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
add a comment |
R correctly orders strings alphabetically, that is why you get that result.
Aside from @Ananda very good answer, if you want to use base R you can use strsplit to remove the "V" from each string and then use as.numeric to cast the strings to integers:
vals <- as.numeric(sapply(cf, FUN=function(x)strsplit(x, "V")[[1]][2]))
Now you can sort your strings using vals
cf[order(vals)]
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
add a comment |
R correctly orders strings alphabetically, that is why you get that result.
Aside from @Ananda very good answer, if you want to use base R you can use strsplit to remove the "V" from each string and then use as.numeric to cast the strings to integers:
vals <- as.numeric(sapply(cf, FUN=function(x)strsplit(x, "V")[[1]][2]))
Now you can sort your strings using vals
cf[order(vals)]
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
R correctly orders strings alphabetically, that is why you get that result.
Aside from @Ananda very good answer, if you want to use base R you can use strsplit to remove the "V" from each string and then use as.numeric to cast the strings to integers:
vals <- as.numeric(sapply(cf, FUN=function(x)strsplit(x, "V")[[1]][2]))
Now you can sort your strings using vals
cf[order(vals)]
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
answered Jul 8 '13 at 16:25
niconico
39.9k1269102
39.9k1269102
add a comment |
add a comment |
Here's a base approach utilizing names and sort (Ananda's was pretty slick):
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
cf2 <- as.numeric(gsub("[^[:digit:]]", "", cf))
names(cf2) <- seq_along(cf2)
cf[as.numeric(names(sort(cf2)))]
## > cf[as.numeric(names(sort(cf2)))]
## [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327"
## [8] "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
add a comment |
Here's a base approach utilizing names and sort (Ananda's was pretty slick):
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
cf2 <- as.numeric(gsub("[^[:digit:]]", "", cf))
names(cf2) <- seq_along(cf2)
cf[as.numeric(names(sort(cf2)))]
## > cf[as.numeric(names(sort(cf2)))]
## [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327"
## [8] "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
add a comment |
Here's a base approach utilizing names and sort (Ananda's was pretty slick):
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
cf2 <- as.numeric(gsub("[^[:digit:]]", "", cf))
names(cf2) <- seq_along(cf2)
cf[as.numeric(names(sort(cf2)))]
## > cf[as.numeric(names(sort(cf2)))]
## [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327"
## [8] "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
Here's a base approach utilizing names and sort (Ananda's was pretty slick):
cf <- c("V440","V457","V116","V327","V446","V108",
"V155","V217","V120","V51","V477")
cf2 <- as.numeric(gsub("[^[:digit:]]", "", cf))
names(cf2) <- seq_along(cf2)
cf[as.numeric(names(sort(cf2)))]
## > cf[as.numeric(names(sort(cf2)))]
## [1] "V51" "V108" "V116" "V120" "V155" "V217" "V327"
## [8] "V440" "V446" "V457" "V477"
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
answered Jul 8 '13 at 16:29
Tyler RinkerTyler Rinker
65.2k42234412
65.2k42234412
add a comment |
add a comment |
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