speed? [R for BE/BA]

posted by Helmut Homepage – Vienna, Austria, 2020-04-30 10:38 (303 d 04:57 ago) – Posting: # 21370
Views: 13,721

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):

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
  system.time(sampleN.scABEL.sdsims(CV = CV, design = "2x3x3",
                                    print = FALSE)[["Sample size"]])[3]

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 🖖
Helmut Schütz

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

Complete thread:

 Admin contact
21,357 posts in 4,459 threads, 1,492 registered users;
online 4 (0 registered, 4 guests [including 3 identified bots]).
Forum time: Saturday 15:36 UTC (Europe/Vienna)

The way to do research is to attack the facts
at the point of greatest astonishment.    Celia Green

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