[R] Deleting rows and columns containing NA's and "" only

[syrvn]

Hi,

thanks for you suggestion.

I finally solved it in a different way using apply and is.na for TRUE NA's
and if(as.character(x) == "NA") etc.

However, I just spotted that read.xls seems to have problems reading in
special characters such as < or >.

Is there any workaround for that?

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