How to set ',' as decimal separator with R

Question

Even though my Windows 7 locale settings specify using \",\" as a decimal separator, R and RStudio give me a \".\" separator. Is there any way to change this? Note the \"LC_

Answer 1

Why do you want to use "," as decimal separator, in that case how R will interprate this R expression

x <- c(2,3) # (two vectors or one). 

So, I assume that you just want to override the default decimal separator to print an output and in this case, I think prettyNum is the right tool.

require(plyr)
head(numcolwise(prettyNum)(iris, dec = ","))

##   Sepal.Length Sepal.Width Petal.Length Petal.Width
## 1          5,1         3,5          1,4         0,2
## 2          4,9           3          1,4         0,2
## 3          4,7         3,2          1,3         0,2
## 4          4,6         3,1          1,5         0,2
## 5            5         3,6          1,4         0,2
## 6          5,4         3,9          1,7         0,4