Dear R users,
Probably, this is quite a simpe question, but I do not find the proper way
to obtain want I need. To explain the problem, I constructed a simple
example.
Suppose I have the following function:
try1<-function(x){
y<-x[1:2]
z<-x[3:4]
y[1]*(z[1]+z[2])+y[2]*(z[1]+z[2])
}
This function will be part of a for loop. This is what I like to obtain for
every k:
if k=2
try1<-function(x){
y<-x[1:2]
z<-x[3:4]
y[1]*(z[1]+z[2])+y[2]*(z[1]+z[2])
}
if k=3
try1<-function(x){
y<-x[1:3]
z<-x[4:5]
y[1]*(z[1]+z[2])+y[2]*(z[1]+z[2])+y[3]*(z[1]+z[2])
}
if k=4
try1<-function(x){
y<-x[1:3]
z<-x[4:5]
y[1]*(z[1]+z[2])+y[2]*(z[1]+z[2])+y[3]*(z[1]+z[2])+y[4]*(z[1]+z[2])
}
Assume that k will be quite high, for example 100.
The problem isn't in defining a for loop, or in defining the appropriate y
or z, but in the line starting with
y[1]. The values of the variables are still unknown, which causes that I am
not able to create this sum.
I really hope that there is somebody in the audience that can help me.
--
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