[R] ignoring zeros or converting to NA

[stephen sefick]

when you read it in na.string=0

On Tue, Aug 12, 2008 at 1:43 PM, rcoder <mpdotbook at gmail.com> wrote:
>
> Hi everyone,
>
> I have a matrix that has a combination of zeros and NAs. When I perform
> certain calculations on the matrix, the zeros generate "Inf" values. Is
> there a way to either convert the zeros in the matrix to NAs, or only
> perform the calculations if not zero (i.e. like using something similar to
> an !all(is.na() construct)?
>
> Thanks,
>
> rcoder
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