speed? [🇷 for BE/BA]

posted by Helmut Homepage – Vienna, Austria, 2020-04-30 14:38 (1830 d 16:16 ago) – Posting: # 21370
Views: 26,211

Hi Yung-jin,

❝ R v4.0.0 seems running faster on Windows …


Really? I removed 3.6.3 yesterday. If you still have it, can you do me a favor and perform a demanding check (sample size by 105 subject simulations for a partial replicate design with heterogenicity, the EMA’s approach of reference-scaling, assumed T/R-ratio 0.9, target power 0.8, five runs):

library(PowerTOST)
if (packageVersion("PowerTOST") < "1.4.8") {
  stop("Please install the latest version from CRAN.")
} else {
  CVp <- 0.4                                      # pooled CVw
  CV  <- signif(CVp2CV(CV = CVp, ratio = 2.5), 4) # CVwT > CVwR
  t   <- numeric(5)
  for (j in seq_along(t)) {
    t[j] <- system.time(sampleN.scABEL.sdsims(CV = CV, design = "2x3x3",
                                              progress = FALSE, details = FALSE,
                                              print = FALSE)[["Sample size"]])[3]   }
  cat(sprintf("%.2f seconds", median(t)), "\n")
}


BTW, I love that in 4.0.0 the default of stringsAsFactors was changed to FALSE.
Something I regularly forgot in imports or assigning data.frames. ;-)
—
Dif-tor heh smusma 🖖🏼 Довге життя Україна! [image]
Helmut Schütz
[image]

The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes

Complete thread:

UA Flag
Activity
 Admin contact
23,424 posts in 4,927 threads, 1,669 registered users;
86 visitors (0 registered, 86 guests [including 7 identified bots]).
Forum time: 06:54 CEST (Europe/Vienna)

My doctor gave me six months to live,
but when I couldn’t pay the bill
he gave me six months more.    Walter Matthau

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5