Hi,

Im new R users. In my research I use rainfall data and Im interested in
estimating missing data. I would like to use Normal Ratio Method to
estimate missing data. My problem is, how do I introduce missing data
randomly within my complete set of data?


Stn ID      Year  Mth   Day   Amount
48603 71 1 1 1
48603 71 1 2 0.5
48603 71 1 3 1.3
48603 71 1 4 0.8
48603 71 1 5 0
48603 71 1 6 0
48603 71 1 7 0
...

Thank you so much for your attention and help.

Regards,
Dila

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