On Sep 28, 2012, at 1:16 PM, JiangZhengyu wrote:
>
> Hi guys, I have many rows (>1000) and columns (>30) of "geno" matrix. I use
> the following loop and condition statement (adapted from someone else code).
> I always have an error below. I was wondering if anyone knows what's the
> problem & how to fix it.
Boy, it surely looks like missing values are the problem. Have you read:
?sum
--
David.
> Thanks,Zhengyu ########### geno matrix P1 P2 P3 P4
> 1 2 2 3 2
> 2 2 2 1 1
> 1 2 1 2 NANA 2 3 4 5 ###########
> for(i in 1:4) {
> cat(i,"")
> if(sum(geno[i,]!=2)>3 && sum(geno[i,]==1)>=1 && sum(geno[i,]==3)>=1){
> tmp = 1
> }
> } ########### 1 2 Error in if (sum(geno[i, ] != 2) > 3 && sum(geno[i, ] == 1)
> >= 1 && sum(geno[i, :
> missing value where TRUE/FALSE needed
>
> [[alternative HTML version deleted]]
David Winsemius, MD
Alameda, CA, USA
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