How do you combine a number and a string without printing the outcome in r

Question

I am trying to combine a number (x=.9) and a string ("Area Under Curve:") together without printing.

I'm trying just to get the result of: Area Under Curve: .9

cat() and paste() both print the result, however I want to assign the result to a new variable.

I tried using merge() and then toString() the result, but I got an annoying comma between the two objects.

Are there other functions that will combine the objects without printing them?

Answer 1

You can go ahead and combine them using paste and store in a new variable:

new_var <- paste('Area under a curve:', x)

or even use sprintf :

 new_var <- sprintf('Area under a curve: %f', x)