[Rd] Windows-specific: image(z,zlim=()) gives bogus colors outside range (PR#525)
bolker@zoo.ufl.edu
bolker@zoo.ufl.edu
Wed, 19 Apr 2000 16:23:34 +0200 (MET DST)
In the Windows version of R (not in the equivalent version
running on Linux RH 6.0), doing image(z,zlim=c(a,b)) with
non-trivial limits (i.e., smaller than the range of z)
plots bogus colors (randomly picked from the colormap,
perhaps?) in regions where z is outside of zlim. (on the
Linux version those regions are just plotted in black, which
seems more appropriate)
For example:
x <- seq(-1,1,length=50)
z1 <- expand.grid(x,x)
z2 <- matrix(apply(z1,1,function(x)sum(x^2)),nrow=50)
image(z2,zlim=c(0.5,1.5))
--please do not edit the information below--
Version:
platform = Windows
arch = x86
os = Win32
system = x86, Win32
status =
major = 1
minor = 0.0
year = 2000
month = February
day = 29
language = R
Windows 9x 4.0 (build 1212) B
Search Path:
.GlobalEnv, Autoloads, package:base
--
Ben Bolker bolker@zoo.ufl.edu
Zoology Department, University of Florida http://www.zoo.ufl.edu/bolker
318 Carr Hall/Box 118525 tel: (352) 392-5697
Gainesville, FL 32611-8525 fax: (352) 392-3704
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