Tracking down error: stringsAsFactors [Power / Sample Size]

posted by d_labes  – Berlin, Germany, 2020-05-13 11:34 (521 d 11:32 ago) – Posting: # 21431
Views: 5,239

Dear Helmut, dear Alyssa!

» » Then i continued with the following command but it appeared error: […]
» Let’s try to figure it out. Execute this code:
» ...
» res <- data.frame(design = rep(designs, each = length(target)),
» target = target, n = NA, power = NA)

This line is the casus knacktus!
The error
Error in match.arg(design) : 'arg' must be NULL or a character vector
means that the design argument in the call of sampleN.scABEL() is not character.
Reason:
Before R4.0.0 the optional argument stringsAsFactors in the call of data.frame() was TRUE. Changed in R4.0.0 to FALSE.
Check this in your installation via
default.stringsAsFactors()
If you get TRUE as answer change
res     <- data.frame(design = rep(designs, each = length(target)),
                      target = target, n = NA, power = NA,
                      stringsAsFactors = FALSE)

and than I'm sure that it works.

All the best

Regards,

Detlew

Complete thread:

Activity
 Admin contact
21,729 posts in 4,543 threads, 1,543 registered users;
online 3 (0 registered, 3 guests [including 3 identified bots]).
Forum time: Saturday 23:06 CEST (Europe/Vienna)

If you want to converse with me,
define your terms.    Voltaire

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