[R] colours in a pdf

[R. Michael Weylandt]

I'm not sure you'll be able to come up with 42 categorial colors:
perhaps facetting / small-multiples here? Colorspace (on CRAN) will
let you make palettes manually, so perhaps that's worth looking at.

Michael

On Fri, May 4, 2012 at 7:49 AM, Gavin Blackburn
<gavin.blackburn at strath.ac.uk> wrote:
> Hi,
>
> Thanks for the help. Extending the palette to 16 or 20 would be a big help. The largest number of files I've had to handle in a single group is 42 and I wouldn't expect it to get much bigger than that.
>
> I'll take a look at RColorBrewer.
>
> Cheers,
>
> Gavin.
>
> -----Original Message-----
> From: R. Michael Weylandt [mailto:michael.weylandt at gmail.com]
> Sent: 04 May 2012 12:43
> To: Gavin Blackburn
> Cc: r-help at r-project.org
> Subject: Re: [R] colours in a pdf
>
> How many colors are you looking for? There are limits to how many the
> eye can make out, but perhaps the RColorBrewer package would be a
> place to start. Also check out: http://colorbrewer2.org/
>
> To see all the builtin colors, you can simply use the colors()
> function, but your viewer won't be able to distinguish most of them.
>
> Michael
>
> On Fri, May 4, 2012 at 7:39 AM, Gavin Blackburn
> <gavin.blackburn at strath.ac.uk> wrote:
>> Hi,
>>
>> I'm plotting PDFs and have a problem. If I have more than 8 sources of data the colours are repeated. These plots are used to remove poor data from the sets so it would be helpful if I could expand the colour range. Is there any way to do this?
>>
>> The plots are coloured by defining a vector colsVec<-1:(length(mzXMLfiles))
>>
>> And defined in the loop for (file in 1:length(mzXMLfiles))
>>
>> as col=file
>>
>> The legend is then coloured using the same vector using col=colsVec
>>
>> Any help would be greatly appreciated. At the moment I have to break up data into sets of 8 and hope that a large number of those are good data sets so I have an aid to identify bad sets.
>>
>> Thanks,
>>
>> Gavin.
>>
>> Dr. Gavin Blackburn
>> SULSA Technologist
>>
>> Strathclyde institute of Pharmacy and Biomedical Science
>> 161 Cathedral Street,
>> Glasgow.
>> G4 0RE
>>
>> Tel: +44 (0)1415483828
>>
>> ScotMet: The Scottish Metabolomics Facility
>> www.metabolomics.strath.ac.uk<http://www.metabolomics.strath.ac.uk>
>>
>>
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>>
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