On 04/11/2007 9:06 AM, david csongor wrote: > Could anyone please help me with this one!!! > I am looping some simple stuff but when I enter an if - function I get this > error message: > > Error in if (y < (2/(1 * pi) * sqrt(1 - ((x - 2)/1)^2))) c[i] = x else c[i] > = 0 : > missing value where TRUE/FALSE needed > > WHAT does it mean, what should I do????
if ( condition ) requires that the condition evaluate to something that it can interpret as TRUE or FALSE. Your condition was y < (2/(1 * pi) * sqrt(1 - ((x - 2)/1)^2)) and it evaluated to a missing value. Several reasons this could happen: y was missing, x was missing, you tried to take a square root of a negative number, etc. Duncan Murdoch ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
