[R] logical 'or' on list of vectors

[Sundar Dorai-Raj]

Tim Bergsma said the following on 6/8/2007 5:57 AM:
> 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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How about:

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

HTH,

--sundar