This is, indeed, bizzare! On Thu, 18 Jul 2019 10:35:57 -0400 Sarah Goslee <sarah.gos...@gmail.com> wrote:
> I've gotten as far as locating the problem in this line from > grDevices::convertColor() > > xyz <- from$toXYZ(color, from.ref.white) So if you manually feed the arguments: Lab <- structure(c(53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 53.484183785248, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 80.0102716478952, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475, 67.3840746825475), .Dim = c(20L, 3L), .Dimnames = list(NULL, c("L", "a", "b"))) white <- c(x = 0.953205712549377, 1, y = 1.08538438164692) to the function: grDevices::colorspaces[['Lab']][['toXYZ']](Lab, white) Do you get the same result on all three computers? If you debugonce(grDevices::colorspaces[['Lab']][['toXYZ']]), then try to convertColor(red.lab, from = "Lab", to = "sRGB"), are the arguments Lab and white the same on all three computers? -- Best regards, Ivan ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.