On 7/31/2006 12:36 AM, Kartik Pappu wrote: > Hi all, > > I created three separate square matrices (lets say R, G, and B). each > one contains a series of values between 0 and 1. I want to be able to > take for example R[1], G[1], B[1] and create a rgb color value into a > fourth matrix. I tried using the rgb function but I must be doing > something wrong because it fails with the following error message. > > (list) object cannot be coerced to 'double'. > > Any ideas on how I could do this.
I just tried what you said, and it worked: > r <- matrix(runif(100), 10,10) > g <- matrix(runif(100), 10,10) > b <- matrix(runif(100), 10,10) > matrix(rgb(r,g,b),10,10) The final call to matrix() is needed because rgb() loses the dimension attribute from its result. Duncan Murdoch ______________________________________________ R-help@stat.math.ethz.ch 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.
