[R] expand data

[Oliver]

hi,  all

I inherited a data set with format like the following:

para.A   para.B   para.C  observation.1  observation.2 observation.3
....

Essentially, the same experiment (with same parameters) are conducted
3 times, with corresponding observations.

What are the efficient ways of re-arranging this data set in a one row
per observation such that:

para.A para.B para.C  observation.1
para.A para.B para.C  observation.2
para.A para.B para.C  observation.3

I am thinking of doing a loop on each row and expand it, but wondering
if there are other more convenient ways?

thanks

Oliver