[R] efficiently finding the integrals of a sequence of functions

JeffND Zuofeng.Shang.5 at nd.edu
Sun Dec 11 18:11:25 CET 2011


I agree that this is a good way of solving this problem. 

Here is another way. Instead of defining a vector of uni-dimensional
functions and trying to integrating
each component (a uni-dimensional function), we can do something below

return(f[x,k]) ## use matrix to represent the sequence of uni-dimensional

my.integral<-function(k) ## k=1,...,5000 denotes the function labels

When calculating the integrals, just perform

sapply(1:5000, my.integral)

This is a way of avoiding loops but the computing time needs to be carefully


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