how to extract the F value in anova from a permutation test

[Marwah Soliman]

Hi
I did a permutation test using the following code

perm=replicate(1000,anova(lm(sample(genenormal)~as.factor(snptest1))))

the I got the following this is just one column , I have more than that :

                  V1
Df             c(2,1092)
Sum sq      c(48.96,9782.66)
Mean sq    c(24.48,8.95) 
F value      c(2.733,NA)
Pr(>F)       c(0.0654,NA)

Question is how to extract the F value from each column to have a vector of just F values without the NA

what I want is the value of 2.733

Thanks

 

[consuli]

I cannot believe the code you have posted has generated the result.

However, it seems to be, your result is a named list or a list with attributes Df, Sum sq ... (you have to check this assumption using the command

str(perm)

If you can count on the structure of the perm object you can use

fvaluevector= perm[4]