In R-beta (Masked Marvel), when I do the example from the read.pnm help file, this is what happens:
x <- read.pnm(system.file("pictures/logo.pgm",package="pixmpap")[1]) Warning message: In rep(cellres, length=2): x is NULL so the result will be NULL In R-2.15.3, it's all right. Thanks, Erin On Fri, Mar 22, 2013 at 2:13 AM, Michael Weylandt < michael.weyla...@gmail.com> wrote: > > > On Mar 22, 2013, at 4:04, Erin Hodgess <erinm.hodg...@gmail.com> wrote: > > Dear R People: > > I am trying to replicate a cool example that I saw on the R-bloggers some > time ago by kafka399. > > Here are the lines tI think may be causing the trouble: > > gray_file <- read.pnm(path) > > pos[i,] <- c(gray_file@grey) > > > Hi Erin, > > This is basically impossible to debug as is -- though I do note you spell > that color between white and black inconsistently; could you please put > some effort into making a true reproducible example or, at the very least, > linking to the project you are attempting to replicate? > > Michael > > > http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example > > > > > The warning error that I get is > "In rep(cellres, length=2): x is NULL so the result will be NULL > > Any suggestions would be much appreciated. > > Thanks, > Sincerely, > Erin > > > > > > -- > Erin Hodgess > Associate Professor > Department of Computer and Mathematical Sciences > University of Houston - Downtown > mailto: erinm.hodg...@gmail.com > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > > -- Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: erinm.hodg...@gmail.com [[alternative HTML version deleted]] ______________________________________________ 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.