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k_ac
2007 Apr 24
2
problem in tapply command
hello
when I entered following command, I got NA values for some catagories.
> tapply(slp_jeo2$slp,slp_jeo2$jeo,mean )
999 Ca Cka DCy Jh JKi Kk
14.06665 NA 14.60445 NA NA NA NA NA
KTa KTac Ku Kua Kus Ky Kyk ODe
NA NA NA NA NA NA NA 17.87489
PTRc Qa Tc Tkisd
NA NA NA 19.64067
how can I correct this problem ?
regards
--
Ahmet Temiz
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