Error in integrate : evaluation of function gave a result of wrong length
integration, r
Solution
You can try:
integrate(Vectorize(f),0,1)$value
see the manual of `integrate`: `f` should be an R function taking a numeric first argument and returning a numeric vector of the same length. `Vectorize` will make `f` a such function that returns an output of the same length as input.
Problem
Try the code below: ``` library(pracma) f <- function(x) 1 integrate(f,0,1)$value quad(f,0,1) ``` quad() works correctly but integrate() reports the error message: Error in integrate(f, 0, 1) : evaluation of function gave a result of wrong length What is wrong with this integrate() application? Thanks in advance!