[Rd] Windows-specific: image(z,zlim=()) gives bogus colors outside
range (PR#525)
Uwe Ligges
ligges@statistik.uni-dortmund.de
Wed, 19 Apr 2000 17:03:06 +0200
bolker@zoo.ufl.edu schrieb:
>
> 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))
Additionally try
image(z2,zlim=c(0.5,0.500001))
Gives segmentation fault on Solaris / Dr. Watson on WinNT
Regards,
Uwe Ligges
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._