Hi there,
I am pretty new to R. Actually I started using it yesterday. I have two
questions:
1. Suppose I have a<-c(1:10) (or a<-array(c(1:10),dim=c(1,10)))
and I want to end up with vector b=[0 0 0 0 0 1 1 1 1 1]. i.e. I want to
substitute alla elements that are <5 with 0 and >5 with 1.
I did this by using a for loop. Is there another function to use so as to avoid
the "for"?
2. Suppose I have a<-c(1,1,2,2,3,3) (or array again)
And I want to place a "4,5" before every "2" and end up with a new "bigger"
vector "b":
b=[1 1 4 5 2 4 5 2 3 3]
Also I want to find where the 2's in array "a" (if it was an array) are located
i.e. positions 3,4.
Thanx very much in advance!!
P.S: Will you inform me via mail or should I visit any blog and post there my
questions?
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