Re: [R] Another way to count TRUE

rge memory. On Thu, 8/6/17, Bert Gunter wrote: Subject: Re: [R] Another way to count TRUE Cc: "R-help" Date: Thursday, 8 June, 2017, 1:09 AM Bad idea! In R3.3.3 it doesn't even work: > y1 <- tabulate(x,1) Error in tabulate(x, 1) : 'bin' must be nu

Re: [R] Another way to count TRUE

Bad idea! In R3.3.3 it doesn't even work: > y1 <- tabulate(x,1) Error in tabulate(x, 1) : 'bin' must be numeric or a factor ## This does: > y1 <- tabulate(as.integer(x),1) But it's more inefficient than just using sum(), even discounting the as.integer() conversion: > y1 <- tabulate(as.intege

[R] Another way to count TRUE

To get the number of TRUE in logical vector 'x', tabulate(x, 1) can be used. Actually, it gives count of 1, but TRUE as integer is 1. Since R 3.4.0, it gives a correct answer, too, when the count is 2^31 or more. __ R-help@r-project.org mailing list --