What does you data look like? You could use 'split' and then examine
the data in each range to count the number missing. Would have to
have some actual data to suggest a solution.
On Sun, Jan 25, 2009 at 8:30 PM, Shreyasee <shreyasee.pradhan at
gmail.com> wrote:> Hi,
>
> I have imported one dataset in R.
> I want to calculate the percentage of missing values for each month (May
> 2006 to March 2007) for each variable.
> Just to begin with I tried the following code :
>
> *for(i in 1:length(dos))
> for(j in 1:length(patientinformation1)
> if(dos[i]=="May-06" &&
patientinformation1[j]=="")
> a <- j+1
> a*
>
> The above code was written to calculate the number of missing values for
May
> 2006, but I am not getting the correct results.
> Can anybody help me?
>
> Thanks,
> Shreyasee
>
> [[alternative HTML version deleted]]
>
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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?