On Oct 6, 2009, at 8:41 AM, goz wrote:
hello,
i try to use the multcomp letters, but i have problems with my
results :
here is my pvalue matrix (from a pairwise.t.test) :
pair=pairwise.t.test(...)
pair$p.value
0 B BxS
B 0.01727 - -
BxS 0.00013 0.00226 -
S 0.87555 0.02610 0.00027
i was thiking to have something like that :
0 B S BxS
a b a c
but function return :
multcompLetters(pair$p.value)
B BxS S
"a" "b" "a"
first question : why the 0 traitement doesn't appears in result ?
But there is a "0" column. <???>
second : why the results differs than what i expected ?
Because your understanding of what it means to have "pairwise"
comparisons differs from that of the author's.
many thanks.
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