[R] Mean of hexadecimal numbers

[Atte Tenkanen]

Thanks to William and Bert!

Atte

16.4.2016, 18.56, William Dunlap kirjoitti:
> Since these are color strings, you can use functions in the grDevices
> package (other others) to manipulate them.  E.g., you can convert them
> to various color spaces and perhaps use the mean in one of those
> spaces as your 'average color'.
>
>   > myColors <- c(One="#FF7C00",Two="#00BF40",Three="#FFFF00")
>   > col2rgb(myColors)
>         One Two Three
>   red   255   0   255
>   green 124 191   255
>   blue    0  64     0
>   > rgb2hsv(col2rgb(myColors))
>            One       Two     Three
>   h 0.08104575 0.3891798 0.1666667
>   s 1.00000000 1.0000000 1.0000000
>   v 1.00000000 0.7490196 1.0000000
>
>
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com <http://tibco.com>
>
> On Sat, Apr 16, 2016 at 8:27 AM, Bert Gunter <bgunter.4567 at gmail.com 
> <mailto:bgunter.4567 at gmail.com>> wrote:
>
>     ... and if you need to convert back:  ?as.hexmode
>
>
>     -- Bert
>
>
>     Bert Gunter
>
>     "The trouble with having an open mind is that people keep coming along
>     and sticking things into it."
>     -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
>
>     On Sat, Apr 16, 2016 at 8:20 AM, Bert Gunter
>     <bgunter.4567 at gmail.com <mailto:bgunter.4567 at gmail.com>> wrote:
>     > ?strtoi
>     >
>     > You'll have to remove the "#" first, e.g. via substring()
>     >
>     > -- Bert
>     >
>     >
>     > Bert Gunter
>     >
>     > "The trouble with having an open mind is that people keep coming
>     along
>     > and sticking things into it."
>     > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>     >
>     >
>     > On Sat, Apr 16, 2016 at 5:47 AM, Atte Tenkanen <attenka at utu.fi
>     <mailto:attenka at utu.fi>> wrote:
>     >> Hi,
>     >>
>     >> How would you calculate the "mean colour" of several colours,
>     for example
>     >> c("#FF7C00","#00BF40","#FFFF00")?
>     >>
>     >> Yours,
>     >>
>     >> Atte Tenkanen
>     >>
>     >> ______________________________________________
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>     >> and provide commented, minimal, self-contained, reproducible code.
>
>     ______________________________________________
>     R-help at r-project.org <mailto:R-help at r-project.org> mailing list --
>     To UNSUBSCRIBE and more, see
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>     PLEASE do read the posting guide
>     http://www.R-project.org/posting-guide.html
>     and provide commented, minimal, self-contained, reproducible code.
>
>


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