Variable as a column name in data frame

Question

Is there any way to use string stored in variable as a column name in a new data frame? The expected result should be:

col.name <- \'col1\'
df <- data.fram         


        

Answer 1

In addition to ssdecontrol's answer, there is a second option.

You're looking for mget. First assign the name to the variable, then the value to the variable that you have previously assigned. After that, mget will evaluate the string and pass it to data.frame.

assign(col.name, "col1")
assign(paste(col.name), 1:4)

df <- data.frame(mget(col.name))
print(df)
  col1
1    1
2    2
3    3
4    4