[R] Odp: how to analysis a dataset with some missing value?
Petr PIKAL
petr.pikal at precheza.cz
Thu Aug 18 10:27:35 CEST 2011
Hi
>
> my qustion is if my miss value in my dataset is -9999
> for example :
> 1 3 21 33 -9999 23 33 -9999
> how can I plot or analysis this dataset ignoring the missing value ?
thanks
> .
Use NA instead of -9999 and things will get better
x<-as.numeric(read.table(textConnection("1 3 21 33 -9999 23 33 -9999")))
y<- sample(x, 1000, replace=T)
plot(y)
y[y== -9999]<-NA
plot(y)
Regards
Petr
>
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> TANG Jie
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