[R] Plotting graph for Missing values

[bartjoosen]

> I added "patientinformation1" variable and then I gave the command for
> "tapply" but its giving me the following error:
>
> Error in tapply(pat1, format(dos, "%Y%m"), function(x) sum(x == 0)) :
>   arguments must have same length



seems like you added patientinformation1, but still use pat1 in the tapply
call.

Bart
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