plot(type="l") disjoint between 100 and 101st datapoint

png("disjoint2.png")
plot(1:210, type="l")
dev.off()

I do not see any disjoint on 2.7.0 patched (r45879) or 2.8.0 devel
(r45830) on RHEL5 64bit.

Dr Oleg Sklyar
Technology Group
Man Investments Ltd
+44 (0)20 7144 3803
osklyar at maninvestments.com

-----Original Message-----
From: r-devel-bounces at r-project.org
[mailto:r-devel-bounces at r-project.org] On Behalf Of Richard Martin
Sent: 27 June 2008 12:38
To: r-devel at r-project.org
Subject: [Rd] plot(type="l") disjoint between 100 and 101st datapoint

Dear All:

We have been experiencing networking issues so I don't know
if this got through; I can't see it in the archive.  My
sincere apologies if this appears twice.

I may have found an unusual bug and am posting here to see if
anyone can reproduce it on their system. First of all, sessionInfo():

sessionInfo()

R version 2.7.1 (2008-06-23)
i386-apple-darwin8.10.1

locale:
en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

The bug is in the plot() command; it does not draw the line
between the 100th and 101st point in a dataset when plotting
in line mode (type="l").

plot(1:102, type="l") reproduces the problem consistently on
my machine, on both png and quartz devices. The result of
saving this to the png device by the code below can be seen
at http://imagebin.ca/view/txKBk2M.html

png(filename="disjoint.png")
plot(1:102, type="l")
dev.off()

quartz
    2

I had a look through the archives but couldn't see any
discussion of this; apologies if I missed it. Is this purely
a mac issue?
Unfortunately I don't have any other machines to test it on.

Kind regards,

Richard Martin




--
Contendere, Explorare, Invenire, et non Cedere



--
Contendere, Explorare, Invenire, et non Cedere

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