Re: [R] Rmpfr correlation

2020-07-12 Thread tring
Thanks a lot - solved the issue! BW Troels -Oprindelig meddelelse- Fra: Rui Barradas Sendt: 12. juli 2020 12:59 Til: tr...@gvdnet.dk; r-help mailing list Emne: Re: [R] Rmpfr correlation Hello, Why not write a function COR? Not one as general purpose as stats::cor but a simple one

Re: [R] Rmpfr correlation

2020-07-12 Thread Rui Barradas
Hello, Why not write a function COR? Not one as general purpose as stats::cor but a simple one, to compute the sample Pearson correlation only. library(Rmpfr) COR <- function(x, y){ precBits <- getPrec(x)[1] n <- mpfr(length(x), precBits = precBits) x.bar <- mean(x) y.bar <- mean(y)

[R] Rmpfr correlation

2020-07-12 Thread tring
Dear friends - I'm calculating buffer capacities by different methods and need very high precision and package Rmpfr is working beautifully. However, I have not been able to find out how to keep precision when finding correlations. library(Rmpfr) KA <- mpfr(10^-4.6, 128) x <- rnorm(100)*KA y <-