# Plotting rgb proportions in R

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## Plotting rgb proportions in R

 Hello, I am trying to plot specific rgb color proportions of a marine specimen in a stacked plot using R and I was looking for some help. I have several rgb proportions per specimen (an example of one is below).  I've run into different examples of people using vegan or grDevices. Can anyone help with this? Red    Green  Blue   % 249 158 37 56.311 249 158 68 4.319 249 158 98 0.058 249 128 7 13.965 249 128 37 12.87 188 128 37 0.029 249 128 68 0.161 188 128 68 0.015 188 98 7 0.029 219 128 7 2.773 219 128 37 2.583 188 98 68 0.058 219 128 68 0.525 249 188 37 0.876 249 188 68 1.08 219 98 7 0.482 249 188 98 0.015 249 158 7 3.852         [[alternative HTML version deleted]] ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: Plotting rgb proportions in R

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## Re: Plotting rgb proportions in R

 In reply to this post by surchin84 Hi Tasha, I may be right off the track, but you could plot RGB proportions on a 3D plot. The easiest way I can think if would be to convert your 0-255 values to proportions: rgb_prop<-read.table(text="Red Green Blue pct 249 158 37 56.311 249 158 68 4.319 249 158 98 0.058 249 128 7 13.965 249 128 37 12.87 188 128 37 0.029 249 128 68 0.161 188 128 68 0.015 188 98 7 0.029 219 128 7 2.773 219 128 37 2.583 188 98 68 0.058 219 128 68 0.525 249 188 37 0.876 249 188 68 1.08 219 98 7 0.482 249 188 98 0.015 249 158 7 3.852",header=TRUE) rgb_prop\$Red<-rgb_prop\$Red/255 rgb_prop\$Green<-rgb_prop\$Green/255 rgb_prop\$Blue<-rgb_prop\$Blue/255 library(scatterplot3d) scatterplot3d(rgb_prop[,1:3],cex.symbols=sqrt(rgb_prop[,4]),  color=rgb(rgb_prop[,1],rgb_prop[,2],rgb_prop[,3]),pch=19) then plot the RGB values on a 3D scatterplot. I have included arguments to make the symbols the actual RGB colors that you specify and their size proportional to the square root of the percentages. Jim On Wed, Dec 19, 2018 at 5:17 AM Tasha O'Hara <[hidden email]> wrote: > > Hello, > > I am trying to plot specific rgb color proportions of a marine specimen in > a stacked plot using R and I was looking for some help. I have several > rgb proportions per specimen (an example of one is below).  I've run into > different examples of people using vegan or grDevices. Can anyone help with > this? > > Red    Green  Blue   % > 249 158 37 56.311 > 249 158 68 4.319 > 249 158 98 0.058 > 249 128 7 13.965 > 249 128 37 12.87 > 188 128 37 0.029 > 249 128 68 0.161 > 188 128 68 0.015 > 188 98 7 0.029 > 219 128 7 2.773 > 219 128 37 2.583 > 188 98 68 0.058 > 219 128 68 0.525 > 249 188 37 0.876 > 249 188 68 1.08 > 219 98 7 0.482 > 249 188 98 0.015 > 249 158 7 3.852 > >         [[alternative HTML version deleted]] > > ______________________________________________ > [hidden email] mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: Plotting rgb proportions in R

 3-d Proportions must sum to 1and are thus actually 2-d and should preferaby be plotted as a ternary plot. Several r packages will do this for you, e.g. package Ternary. Search "ternary plots" on rseek.org for others. -- 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 Tue, Dec 18, 2018 at 3:10 PM Jim Lemon <[hidden email]> wrote: > Hi Tasha, > I may be right off the track, but you could plot RGB proportions on a > 3D plot. The easiest way I can think if would be to convert your 0-255 > values to proportions: > > rgb_prop<-read.table(text="Red Green Blue pct > 249 158 37 56.311 > 249 158 68 4.319 > 249 158 98 0.058 > 249 128 7 13.965 > 249 128 37 12.87 > 188 128 37 0.029 > 249 128 68 0.161 > 188 128 68 0.015 > 188 98 7 0.029 > 219 128 7 2.773 > 219 128 37 2.583 > 188 98 68 0.058 > 219 128 68 0.525 > 249 188 37 0.876 > 249 188 68 1.08 > 219 98 7 0.482 > 249 188 98 0.015 > 249 158 7 3.852",header=TRUE) > rgb_prop\$Red<-rgb_prop\$Red/255 > rgb_prop\$Green<-rgb_prop\$Green/255 > rgb_prop\$Blue<-rgb_prop\$Blue/255 > library(scatterplot3d) > scatterplot3d(rgb_prop[,1:3],cex.symbols=sqrt(rgb_prop[,4]), >  color=rgb(rgb_prop[,1],rgb_prop[,2],rgb_prop[,3]),pch=19) > > then plot the RGB values on a 3D scatterplot. I have included > arguments to make the symbols the actual RGB colors that you specify > and their size proportional to the square root of the percentages. > > Jim > > On Wed, Dec 19, 2018 at 5:17 AM Tasha O'Hara <[hidden email]> > wrote: > > > > Hello, > > > > I am trying to plot specific rgb color proportions of a marine specimen > in > > a stacked plot using R and I was looking for some help. I have several > > rgb proportions per specimen (an example of one is below).  I've run into > > different examples of people using vegan or grDevices. Can anyone help > with > > this? > > > > Red    Green  Blue   % > > 249 158 37 56.311 > > 249 158 68 4.319 > > 249 158 98 0.058 > > 249 128 7 13.965 > > 249 128 37 12.87 > > 188 128 37 0.029 > > 249 128 68 0.161 > > 188 128 68 0.015 > > 188 98 7 0.029 > > 219 128 7 2.773 > > 219 128 37 2.583 > > 188 98 68 0.058 > > 219 128 68 0.525 > > 249 188 37 0.876 > > 249 188 68 1.08 > > 219 98 7 0.482 > > 249 188 98 0.015 > > 249 158 7 3.852 > > > >         [[alternative HTML version deleted]] > > > > ______________________________________________ > > [hidden email] mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > [hidden email] mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help> PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code. >         [[alternative HTML version deleted]] ______________________________________________ [hidden email] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-helpPLEASE do read the posting guide http://www.R-project.org/posting-guide.htmland provide commented, minimal, self-contained, reproducible code.
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## Re: Plotting rgb proportions in R

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