Replacing some elements in a variable
I have a txt file format. I have some problems about reading and replacing this file.
When I use:
mrk <- read.table("mrk.txt", skip = 1, colClasses = c("numeric","character") )
str(mrk)
'data.frame': 1550 obs. of 2 variables:
$ V1: num 22079 21553 ...
$ V2: chr "0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023" "0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323"
My problems are:
1- mrk$ V2 is character. It should be as numeric and similar to string.
2- I should replace 3 and 4 to 1:
mrk$V2[mrk$V2=="3"]<-"1"
mrk$V2[mrk$V2=="4"]<-"1"
It does not work. Can you help me?
r string replace numeric
edited Nov 18 '18 at 12:14
markus
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
add a comment |
I have a txt file format. I have some problems about reading and replacing this file.
When I use:
mrk <- read.table("mrk.txt", skip = 1, colClasses = c("numeric","character") )
str(mrk)
'data.frame': 1550 obs. of 2 variables:
$ V1: num 22079 21553 ...
$ V2: chr "0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023" "0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323"
My problems are:
1- mrk$ V2 is character. It should be as numeric and similar to string.
2- I should replace 3 and 4 to 1:
mrk$V2[mrk$V2=="3"]<-"1"
mrk$V2[mrk$V2=="4"]<-"1"
It does not work. Can you help me?
r string replace numeric
edited Nov 18 '18 at 12:14
markus
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
add a comment |
I have a txt file format. I have some problems about reading and replacing this file.
When I use:
mrk <- read.table("mrk.txt", skip = 1, colClasses = c("numeric","character") )
str(mrk)
'data.frame': 1550 obs. of 2 variables:
$ V1: num 22079 21553 ...
$ V2: chr "0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023" "0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323"
My problems are:
1- mrk$ V2 is character. It should be as numeric and similar to string.
2- I should replace 3 and 4 to 1:
mrk$V2[mrk$V2=="3"]<-"1"
mrk$V2[mrk$V2=="4"]<-"1"
It does not work. Can you help me?
r string replace numeric
edited Nov 18 '18 at 12:14
markus
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
I have a txt file format. I have some problems about reading and replacing this file.
When I use:
mrk <- read.table("mrk.txt", skip = 1, colClasses = c("numeric","character") )
str(mrk)
'data.frame': 1550 obs. of 2 variables:
$ V1: num 22079 21553 ...
$ V2: chr "0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023" "0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323"
My problems are:
1- mrk$ V2 is character. It should be as numeric and similar to string.
2- I should replace 3 and 4 to 1:
mrk$V2[mrk$V2=="3"]<-"1"
mrk$V2[mrk$V2=="4"]<-"1"
It does not work. Can you help me?
r string replace numeric
r string replace numeric
edited Nov 18 '18 at 12:14
markus
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
edited Nov 18 '18 at 12:14
markus
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
edited Nov 18 '18 at 12:14
markus
11.3k1132
edited Nov 18 '18 at 12:14
markus
11.3k1132
edited Nov 18 '18 at 12:14
markus
11.3k1132
11.3k1132
asked Nov 18 '18 at 12:10
fatemefateme
52
asked Nov 18 '18 at 12:10
fatemefateme
52
asked Nov 18 '18 at 12:10
fatemefateme
52
52
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Use gsub for the replacment
V2 <- c("0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023",
"0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323")
V2 <- gsub("[3|4]", "1", V2)
as.numeric(V2)
#[1] 2.110011e+98 2.111022e+98
But you might consider to change the argument colClasses from c("numeric", "character") to c("numeric", "numeric"). when reading your data into R.
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Use gsub for the replacment
V2 <- c("0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023",
"0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323")
V2 <- gsub("[3|4]", "1", V2)
as.numeric(V2)
#[1] 2.110011e+98 2.111022e+98
But you might consider to change the argument colClasses from c("numeric", "character") to c("numeric", "numeric"). when reading your data into R.
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
add a comment |
Use gsub for the replacment
V2 <- c("0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023",
"0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323")
V2 <- gsub("[3|4]", "1", V2)
as.numeric(V2)
#[1] 2.110011e+98 2.111022e+98
But you might consider to change the argument colClasses from c("numeric", "character") to c("numeric", "numeric"). when reading your data into R.
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
add a comment |
Use gsub for the replacment
V2 <- c("0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023",
"0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323")
V2 <- gsub("[3|4]", "1", V2)
as.numeric(V2)
#[1] 2.110011e+98 2.111022e+98
But you might consider to change the argument colClasses from c("numeric", "character") to c("numeric", "numeric"). when reading your data into R.
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
Use gsub for the replacment
V2 <- c("0244004434040323042220022240040200322344300043202322322202240023434432420023002200223430420004344023",
"0233402242030024022334032220030340022023000034202422423202230024303343223344320303440204030303032323")
V2 <- gsub("[3|4]", "1", V2)
as.numeric(V2)
#[1] 2.110011e+98 2.111022e+98
But you might consider to change the argument colClasses from c("numeric", "character") to c("numeric", "numeric"). when reading your data into R.
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
answered Nov 18 '18 at 12:19
markusmarkus
11.3k1132
11.3k1132
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
add a comment |
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
1
1
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
Thank you kindly.
– fateme
Nov 18 '18 at 12:41
add a comment |
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