Re: [R] logical 'or' on list of vectors

From: Chuck Cleland <ccleland_at_optonline.net>
Date: Fri, 08 Jun 2007 09:28:36 -0400

Tim Bergsma wrote:
> Suppose I have a list of logicals, such as returned by lapply:
>
> Theoph$Dose[1] <- NA
> Theoph$Time[2] <- NA
> Theoph$conc[3] <- NA
> lapply(Theoph,is.na)
>
> Is there a direct way to execute logical "or" across all vectors? The
> following gives the desired result, but seems unnecessarily complex.
>
> as.logical(apply(do.call("rbind",lapply(Theoph,is.na)),2,"sum"))

  Is this what you want?

apply(is.na(Theoph), 1, any)

> Regards,
>
> Tim
>
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-- 
Chuck Cleland, Ph.D.
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Received on Fri 08 Jun 2007 - 13:38:19 GMT

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