Le lundi 18 juin 2012 à 12:58 -0700, hamoreno a écrit : > Hi all, > > Is there any problem of precision when using seq?. For example: > > x<- seq(0,4,0.1) > x[4]=0.3 > > BUT: > > x[4]-0.3=5.551115e-17 > > It means when I use this condition within an if clause, it does not find > values with 0.3 for x[4] as it is not precisely 0.3. > Is there any bug in seq() ? No. Have a look at the FAQ: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
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