[R] logical 'or' on list of vectors

From: Tim Bergsma <timb_at_metrumrg.com>
Date: Fri, 08 Jun 2007 08:57:05 -0400


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"))

Regards,

Tim



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