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Comment:
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← Revision 4 as of 2013-03-08 10:17:40 ⇥
546
converted to 1.6 markup
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Deletions are marked like this. | Additions are marked like this. |
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pvals <- NA pf <- function(pl) { { if (any(is.na(pl))) { res <- "There was an empty array of p-values"} else res <- pfish(pvals) } return(res) } |
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pl <- NA pl <- length(pvals) { if (is.na(pl)) { res <- "There was an empty array of p-values"} else res <- pfish(pvals) } print(res) |
pf(pvals) |
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(I hope to improve this so that only the pvals vector needs to be entered for each run with the check to see if the p-value vector is empty done less obtrusively!) |
R code for combining p-values using Bailey and Gribskov (1998) method
pfish <- function(p) { t <- prod(p) x <- -log(prod(p)) n <- length(p) v <- c(1:n-1) a <- t*(x^v)/factorial(v) pf <- sum(a) return(pf) } pvals <- NA pf <- function(pl) { { if (any(is.na(pl))) { res <- "There was an empty array of p-values"} else res <- pfish(pvals) } return(res) }
Running this inputting a list of pvalues on vector pvals
pvals <- c(0.1,0.01,0.01,0.7,0.3,0.1) pf(pvals)
we get
[1] 0.002148704