[R] Σχετ: change colour in barplot

[Jeff Newmiller]

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On November 20, 2017 4:09:34 AM PST, Maria Lathouri via R-help <r-help at r-project.org> wrote:
>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 
>
>Στις 11:53 π.μ. Δευτέρα, 20 Νοεμβρίου 2017, ο/η Duncan Murdoch
><murdoch.duncan at gmail.com> έγραψε:
> 
>
> 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
>
>
>   
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