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If you want to create an empty data. frame with dynamic names (colnames in a variable), this can help: names <- c("v","u","w") df <- data. frame() for (k in names) df[[k]]<-as. numeric() You can change the type as well if you need so.
How to Create a Data Frame. We can create a dataframe in R by passing the variable a,b,c,d into the data. frame() function. We can R create dataframe and name the columns with name() and simply specify the name of the variables.
To create an empty Data Frame in R, call data. frame() function, and pas no arguments to it. The function returns an empty Data Frame with zero rows and zero columns.
Just create a data.frame with 0 length variables
eg
nodata <- data.frame(x= numeric(0), y= integer(0), z = character(0))
str(nodata)
## 'data.frame': 0 obs. of 3 variables:
## $ x: num
## $ y: int
## $ z: Factor w/ 0 levels:
or to create a data.frame with 5 columns named a,b,c,d,e
nodata <- as.data.frame(setNames(replicate(5,numeric(0), simplify = F), letters[1:5]))
Perhaps:
> data.frame(aname=NA, bname=NA)[numeric(0), ]
[1] aname bname
<0 rows> (or 0-length row.names)
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