Noncentral beta and noncentral F distribution

Download R Project package source:
fpow package (CRAN)

Download source code:
ncbeta.svb (Statistica Visual Basic)

These source files can be used to compute the cdf of the noncentral beta and noncentral F distribution, and to calculate minimal detectable differences for general ANOVA models (sample size calculations, power analysis) in R and in Statistica Visual Basic.
The codes contain comments, the theoretical background is discussed in the paper On the computation of the noncentral F and noncentral beta distribution, preprint available in PDF format here.