Format one column:
df$b <- format(round(df$b, 3), nsmall = 3)
If we need to format many numeric columns:
ix <- sapply(df, is.numeric)
df[ ix ] <- format(round(df[ ix ], 3), nsmall = 3)
I have a simple question. I have a large dataset with text and numerical variables. I would like to format the numerical variables, but without saving them in a separate dataset and re-merging them (that would take way to much time).
How do I do this?
Here is a minimal example of what I mean:
a <- c("name1", "name2", "name3")
b <- rnorm(3)
df <- data.frame(a=a, b=b)
df<- format(round(df, 3), nsmall=3)
This gives me an error as "a" is a non-numeric variable. So how do I format just "b"?
Format one column:
df$b <- format(round(df$b, 3), nsmall = 3)
If we need to format many numeric columns:
ix <- sapply(df, is.numeric)
df[ ix ] <- format(round(df[ ix ], 3), nsmall = 3)