From radiosity at gmail.com  Fri Jun 27 17:59:38 2008
From: radiosity at gmail.com (Richard Martin)
Date: Fri, 27 Jun 2008 16:59:38 +0100
Subject: [Rd] plot(type="l") disjoint between 100 and 101st datapoint
In-Reply-To: <alpine.LFD.1.10.0806271649570.23779@gannet.stats.ox.ac.uk>
References: <eea558470806270329s40e512f1vba68a4ac3938231e@mail.gmail.com>
	<eea558470806270438h4c9e7242v274d84c4b872c36a@mail.gmail.com>
	<alpine.LFD.1.10.0806271649570.23779@gannet.stats.ox.ac.uk>
Message-ID: <eea558470806270859ga73e71ap9bdc66916847612b@mail.gmail.com>

Dear Prof. Ripley,

Thanks for your advice; indeed, plotting with cairo is not disjointed
and therefore this is a quartz issue. I will inquire further on sig
mac.

Have a nice weekend,

Regards,

Richard Martin

2008/6/27 Prof Brian Ripley <ripley at stats.ox.ac.uk>:
> Please, this is specific to your device (since png() on MacOS defaults to
> quartz).  So discuss it on R-sig-mac.
>
> Try a different device (you do have several of those on your system!)
> including a different version of png().
>
> I think it is related to the fix for excessively slow plotting in 2.7.0, but
> I'm not near my Mac.
>
> On Fri, 27 Jun 2008, Richard Martin wrote:
>
>> 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
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>
> --
> Brian D. Ripley,                  ripley at stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>



-- 
Contendere, Explorare, Invenire, et non Cedere



[Rd] plot(type="l") disjoint between 100 and 101st datapoint
Richard Martin