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Dealing with NA's in a data matrix

3 messages · Amit Patel, Henrique Dallazuanna, Gregor Gorjanc

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x[is.na(x)] <- 0
On 05/12/2007, Amit Patel <amitpatel_ak at yahoo.co.uk> wrote:

  
    
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Henrique Dallazuanna <wwwhsd <at> gmail.com> writes:
value of 0.
also

library(gdata)
x <- matrix(rnorm(16), nrow=4, ncol=4)
x[1, 1] <- NA
NAToUnknown(x, unknown=0)

Gregor