This is FAQ 7.31: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
Also please do not piggy back on other threads since it makes the archives less useful. On 6/30/06, Alexander Nervedi <[EMAIL PROTECTED]> wrote: > Hi! > > In the example below why is x[[1]] == 0.2237724 false? > > Alexander Nervedi > > > >x <- runif(10) > >x[[1]] > [1] 0.2237724 > > >x > [1] 0.2237724 0.2678944 0.9375811 0.5963889 0.6180519 0.6449580 0.7308510 > [8] 0.7347386 0.4837286 0.1416100 > > >x[[1]] == 0.2237724 > FALSE > > > > > > > >From: "Alexander Nervedi" <[EMAIL PROTECTED]> > >To: [email protected] > >Subject: Re: [R] Creating Vectors > >Date: Fri, 30 Jun 2006 21:57:35 +0000 > > > >Hi all. > > > >I have a factor variable distributed over time. I am looking for an elegant > >way to code duration of a state. Suppose, > > > > >rainfall.shocks <- factor(sample(c(1,2,3), size = 15, replace = TRUE, > >prob > > >= unit.p), > >+ label = c("Drought", "Normal", "High")) > > > > > >rainfall.shocks > >[1] Normal High High Drought Normal Normal High Normal Drought > >[10] Normal Drought Normal Normal Normal Normal > > > > > >So capture the duration of say drought, I'd need a variable that is able to > >keep track of rainfall.shocks as well as its past values. I was wondering > >if > >there is any obvious way to do this. the Drought variable in this case > >would > >have values > > > >0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 > > > >many thanks for the suggestions you are likely to make. > > > >Alexander Nervedi > > > >______________________________________________ > >[email protected] mailing list > >https://stat.ethz.ch/mailman/listinfo/r-help > >PLEASE do read the posting guide! > >http://www.R-project.org/posting-guide.html > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
