[R] NA values

Eleni Christodoulou elenichri at gmail.com
Wed Nov 21 12:15:32 CET 2007

Hi all!

I am new to R and I would like to ask you the following question:How
can I substitute the NA values with 0 in a data frame? I cannot find a
command to check if a value is NA...

Thank you very much!

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