From J.C.Rougier@durham.ac.uk  Thu Apr  6 19:15:05 2000
From: J.C.Rougier@durham.ac.uk (J.C.Rougier@durham.ac.uk)
Date: Thu, 6 Apr 2000 20:15:05 +0200 (MET DST)
Subject: [Rd] Strange behaviour of image (PR#510)
Message-ID: <200004061815.UAA02888@pubhealth.ku.dk>

The following commands

z <- matrix(seq(0, 1, len=1000))
image(z, 1, z, zlim=c(0, 1), col=gray(1:10/10))

appear to violate the image functionality as described on the
help page.  As I understand it, by specifying a zlim of c(0, 1)
and a colour vector of length 10, the colours should correspond
to the intervals (0, 0.1), (0.1, 0.2), ..., (0.9, 1.0), this
being 10 equally-spaced intervals on (0, 1).  It is clear from
the image that this has not occurred.  In fact the intervals are
apparently (0, 1/18), (1/18, 3/18), ..., (15/18, 17/18), (17/18,
1).  Have I misunderstood something?

Cheers, Jonathan.

--please do not edit the information below--

Version:
 platform = sparc-sun-solaris2.7
 arch = sparc
 os = solaris2.7
 system = sparc, solaris2.7
 status = Patched
 major = 0
 minor = 99.0
 year = 2000
 month = February
 day = 9
 language = R

Search Path:
 .GlobalEnv, Autoloads, package:base

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[Rd] Strange behaviour of image (PR#510)
J.C.Rougier@durham.ac.uk