Bioequivalence and Bioavailability Forum • R packages code

R packages code [Nonparametrics]

posted by d_labes – Berlin, Germany, 2010-09-27 13:27 (5395 d 09:16 ago) – Posting: # 5938
Views: 24,300

Dear Helmut!

❝ I'm wondering whether there's a cut-off implemented in both packages switching from the exact method (based on permutation) to an approximation due to performance reasons? I know that it's possible to dump the code from the library, but my knowledge of R is too limited (even to use the right keywords for a search).

It is described in the help pages for wilcox.exact.
Use getS3method("wilcox.exact","default") to see the code.

For coin it is more difficult because of the S4 implementation and deserves more puzzling detective work. Especially the theoretic framework must be known in detail to follow the implementation pieces. Out of scope for a run-of-the-mill applied statistician like me.

—
Regards,

Detlew

Complete thread:

tmax in case of ties: R vs. R vs. SAS d_labes 2010-09-10 12:05 [Nonparametrics]
- tmax in case of ties: StatXact, Phoenix, and... Helmut 2010-09-10 18:28
  - Ties, no ties, ties, no ties ... d_labes 2010-09-13 13:21
    - simulation martin 2010-09-14 08:33
      - simulants of the world unite d_labes 2010-09-15 10:14
        
        simulants of the world unite martin 2010-09-15 14:53
        
        simulants of the world unite Helmut 2010-09-15 16:17
        
        simul ants with no ties d_labes 2010-09-16 11:19
        
        simul ants with no ties Helmut 2010-09-16 14:01
        
        two different approaches martin 2010-09-16 15:35
- evaluation of tmax: use of relative effects? martin 2010-09-16 18:04
  - Not positive about that Helmut 2010-09-16 19:52
    - Not positive about that martin 2010-09-16 21:00
      - Stupidity Helmut 2010-09-17 13:10
- tmax in case of ties: R vs. R vs. SAS Jack 2010-09-20 14:03
  - R packages Helmut 2010-09-20 14:20
    - R packages coded_labes 2010-09-27 11:27
    - R packages Jack 2010-09-27 16:14
  - Is Exact exact? d_labes 2010-09-27 09:53