> (-8+0i)^(1/3) [1] 1+1.732051i ie complex...
On 12/07/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > hi all > > why does R do this: > > (-8)^(1/3)=NaN > > the answer should be : -2 > > a silly question but i kept on getting errors in some of my code due to this > problem. > > i solve the problem as follows: > > say we want : (-a)^(1/3) > > then : sign(a)*(a^(1/3)) works > > but there has to be a simpler way of soing such a simple mathematical > operation. > > thanking you > / > allan > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
