[R] data.frame(1)*1:4 = 1?

[Spencer Graves]

Hello, All:


       What's the logic behind "data.frame(1)*1:4" producing a scalar 
1?  Or the following:


  data.frame(1:2, 3:4)*5:7
   X1.2 X3.4
1    5   21
2   12   20


       I stumbled over this, because I thought I was multiplying a 
scalar times a vector, and obtaining a scalar rather than the 
anticipated vector.  I learned that my "scalar" was in fact a data.frame 
with one row and one column.


       What am I missing?


       Thanks,
       Spencer