[R] Σχετ: change colour in barplot

Maria Lathouri
Mon, 20 Nov 2017 12:09:34 -0000

Dear all,?
I am really sorry for this. I have attached the script and a .csv file with an
example.?
Hope this will help.
Many thanks,Maria

    ???? 11:53 ?.?. ???????, 20 ????????? 2017, ?/? Duncan Murdoch
<murdoch.duncan at gmail.com> ??????:


 On 20/11/2017 6:38 AM, Maria Lathouri via R-help wrote:
>? Dear all
> I know that it is a very simple question but it seems that I cannot change
the colour in the bars.
> I have the following dataframe:
> A ? ? ? ? ? ? ? ?? B ? ? ? ? ? ? ? ? C ? ? ? ? ? D ? ? ? ?? E ? ? ? ? ? ? ?
? ?? F ? ? ? ? ? ? ? ? ?? G ? ? ? ? ? ? ? ?0.0.24 ? ? ? ?? 152460 ? ? ? ? 474 ?
? ? 5.5 ? ? ?? 612000 ? ? ? ? ? 59061000 ? ? ? 1540313
> and here is the script:
> setwd("~/Desktop")
> emission<-read.csv("emission from land.csv")
> attach(emission)
> #define the formulas
>
Emission_from_Land<-A*B*C*DEmission_from_Access_Road<-E*(F/1000000)*CEmissions_from_well<-(G/1000000)*E*C
> #combine my outputs into a new dataframe
> dat<-cbind(Emission_from_Land, Emission_from_Access_Road,
Emissions_from_well_pad)
> #plot a barplot
> barplot(dat, ylab="Kg-CO2 Eq", ylim=c(0.0e+00, 2e+10),
axisnames=FALSE, col=c("blue", "red", "orange"),
>? ??????? main ="Well Site Construction Emissions",
legend.text=c("Land", "Access", "Well"),
>? ??????? args.legend = list(x="bottom", horiz="TRUE",
bty="n", inset=c(-0.5, -0.25)))
> When I add the col= argument, the colour changes in the legend but not the
actual bars in the plot. I don't know what I am doing wrong. I know that I
am missing something but I cannot figure it out.
> I would very much appreciate for your help.

We don't have your data, so we can't reproduce that plot.? But when I do
the following, I see three colours:

dat <- matrix(1:9, ncol=3)*0.5e9
par(mfrow=c(2,2))
barplot(dat, ylab="Kg-CO2 Eq", ylim=c(0.0e+00, 2e+10),
axisnames=FALSE,
col=c("blue", "red", "orange"),
? ? ? ? ? main ="Well Site Construction Emissions",
legend.text=c("Land", "Access", "Well"),
? ? ? ? ? args.legend = list(x="bottom", horiz="TRUE",
bty="n",
inset=c(-0.5, -0.25)))

So you'll need to give us a reproducible example if you want help.

Duncan Murdoch