Changing locale inside package function
I have a function which resides inside a package, assume the function is called foo(). I want it to read an Excel file with Greek letters, so I change the locale to Greek. After reading in the datafile I do something with this data and the Greek characters and after that I want the locale changed back to the default value.
foo <- function(file, sheet){
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx(file, sheet)
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
return(cols_greek)
}
Looks great... But it does not work when the code resides inside the foo function. The columns containing Greek characters are not returned correctly. Running the code just like this
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx("file.xlsx", sheet = "data")
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
cols_greek
works perfectly fine and the right column names are returned. Can anyone tell me why that is?
Any help would be greatly appreciated.
r function locale
asked Nov 13 '18 at 15:24
VeerleVeerle
234
add a comment |
I have a function which resides inside a package, assume the function is called foo(). I want it to read an Excel file with Greek letters, so I change the locale to Greek. After reading in the datafile I do something with this data and the Greek characters and after that I want the locale changed back to the default value.
foo <- function(file, sheet){
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx(file, sheet)
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
return(cols_greek)
}
Looks great... But it does not work when the code resides inside the foo function. The columns containing Greek characters are not returned correctly. Running the code just like this
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx("file.xlsx", sheet = "data")
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
cols_greek
works perfectly fine and the right column names are returned. Can anyone tell me why that is?
Any help would be greatly appreciated.
r function locale
asked Nov 13 '18 at 15:24
VeerleVeerle
234
What exactly does "does not work" mean? Are you getting an error? Your functionfoo()doesn't seem to be returning thedatavalue anywhere. Also look at theon.exit()function for resetting the locale on function exit.
– MrFlick
Nov 13 '18 at 16:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13
add a comment |
I have a function which resides inside a package, assume the function is called foo(). I want it to read an Excel file with Greek letters, so I change the locale to Greek. After reading in the datafile I do something with this data and the Greek characters and after that I want the locale changed back to the default value.
foo <- function(file, sheet){
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx(file, sheet)
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
return(cols_greek)
}
Looks great... But it does not work when the code resides inside the foo function. The columns containing Greek characters are not returned correctly. Running the code just like this
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx("file.xlsx", sheet = "data")
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
cols_greek
works perfectly fine and the right column names are returned. Can anyone tell me why that is?
Any help would be greatly appreciated.
r function locale
asked Nov 13 '18 at 15:24
VeerleVeerle
234
I have a function which resides inside a package, assume the function is called foo(). I want it to read an Excel file with Greek letters, so I change the locale to Greek. After reading in the datafile I do something with this data and the Greek characters and after that I want the locale changed back to the default value.
foo <- function(file, sheet){
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx(file, sheet)
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
return(cols_greek)
}
Looks great... But it does not work when the code resides inside the foo function. The columns containing Greek characters are not returned correctly. Running the code just like this
Sys.setlocale(category = "LC_ALL", locale = "Greek")
data <- read.xlsx("file.xlsx", sheet = "data")
cols_greek <- names(data)[which(apply(data, 2, function(x) grepl("α|β|σ|ε|γ|π|δ|θ|λ|χ|μ|°", x)), arr.ind = TRUE)[,2]]
cols_greek <- cols_greek[!duplicated(cols_greek)]
Sys.setlocale()
cols_greek
works perfectly fine and the right column names are returned. Can anyone tell me why that is?
Any help would be greatly appreciated.
r function locale
r function locale
asked Nov 13 '18 at 15:24
VeerleVeerle
234
asked Nov 13 '18 at 15:24
VeerleVeerle
234
edited Nov 14 '18 at 9:13
Veerle
asked Nov 13 '18 at 15:24
VeerleVeerle
234
asked Nov 13 '18 at 15:24
VeerleVeerle
234
asked Nov 13 '18 at 15:24
VeerleVeerle
234
234
What exactly does "does not work" mean? Are you getting an error? Your functionfoo()doesn't seem to be returning thedatavalue anywhere. Also look at theon.exit()function for resetting the locale on function exit.
– MrFlick
Nov 13 '18 at 16:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13
add a comment |
What exactly does "does not work" mean? Are you getting an error? Your functionfoo()doesn't seem to be returning thedatavalue anywhere. Also look at theon.exit()function for resetting the locale on function exit.
– MrFlick
Nov 13 '18 at 16:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13
What exactly does "does not work" mean? Are you getting an error? Your function
foo() doesn't seem to be returning the data value anywhere. Also look at the on.exit() function for resetting the locale on function exit.– MrFlick
Nov 13 '18 at 16:10
What exactly does "does not work" mean? Are you getting an error? Your function
foo() doesn't seem to be returning the data value anywhere. Also look at the on.exit() function for resetting the locale on function exit.– MrFlick
Nov 13 '18 at 16:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13
add a comment |
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What exactly does "does not work" mean? Are you getting an error? Your function
foo()doesn't seem to be returning thedatavalue anywhere. Also look at theon.exit()function for resetting the locale on function exit.– MrFlick
Nov 13 '18 at 16:10
Does not work means the data is read in using the default locale, and not the Greek locale. After reading in the data I count the Greek characters and I return the counts from the function. This is just a plain example.
– Veerle
Nov 14 '18 at 9:10
I adjusted my question a bit to make it more clear as why I want to do this.
– Veerle
Nov 14 '18 at 9:13