[R] getting column's main

Hello. I have data of potatoes production in EU during 1998-2009 from EuroStat where the first column consists of the names of EU countries, the following columns consists of appropriate data in each year. Let's say, I investigate Lithuania. For example, I have a row containing potatoes producti

[R] [help] deleting rows which contain more than 2 NAs or zeros

Hello. I have just started learning how to work with R program but I have encountered a problem. I can't think up how to remove the rows which contain two (2) or more NA or Zero (0). I would be glad if you could help me because I just have some basic knowledge so far and I even haven't mastered