Try this which interpolates the NAs using na.approx from zoo drawing the interpolated series with lty=3 and then overwrites solid lines with the gaps using lines.
library(zoo) plot(y ~ x, as.data.frame(na.approx(zoo(cbind(x, y)))), lty = 3, type = "l") lines(y ~ x) On Wed, Apr 16, 2008 at 8:56 PM, DinoDragon <[EMAIL PROTECTED]> wrote: > This maybe a silly question. I'm trying to figure out a way to draw a line > from a data set which contain NA. Say, I have a set of data as: > > x <- c(1.1 2.2 NA 4.4 5.5) ; y <- c(1:5) # as x,y of point a, b, c, d, and e. > > I would like to plot this to a line by using dot-line to connect the two > adjacent points before and after the NA, something like: > (a)______(b)......(d)______(e) > > Any help will be very appreciated. > > -- > > > Smiles, > > Timothy Huang 黃大ㄧ > > 43, Lane 525, Section 3, AnKang Road, XinDian City > > Taipei County, Taiwan 23156, Rep. of China > > 台北縣23156新店市安康路三段525巷43號 > > Tel 886-2-2214-0517 Fax 886-2-2214-4201 > > > Get Skype <http://www.skype.com/go/download> and call me for free. > > Web: www.dinodragon.com <http://www.dinodragon.com/> > > Blog: http://tw.myblog.yahoo.com/timd_huang/ > > Blog: http://bloguide.ettoday.com/dinodragon/ > Web: http://www.meteoritefossilgallery.com/ > > ______________________________________________ > 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. > ______________________________________________ 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.
