[R] Help

[Jibrin Alhassan]

Here is the script I used to plot the graph indicating the text I wanted to
insert. The line in the script that I have issues with is: text(-8,-8,
"R^2=  0.62",  r = 0.79, N = 161", cex = 2
R^2=  0.62 is not producing R squared = 0.62.
Thanks.
Sys.setenv( TZ="GMT" )
dt <- read.table("CLMXAPTY_sim", col.names = c("FDcli", "FDapt"))
FDcli=dt$FDcli
FDapt=dt$FDapt
setEPS()
postscript(file = "cliapt2.eps")
par(mar = c(4.3, 4.3, 1.3, 1.3), oma = c(1, 1, 1 , 1))
plot(FDapt,FDcli, pch = 16,  cex.lab = 1.6, cex.axis = 1.4, cex.main = 0.8,
font.lab = 1.7, font.axis = 1.7,  col = "red",main = "Simultaneous Events
at CLMX and APTY",ylab="CLMX",xlab="APTY")
text(-8,-8, "R^2=  0.62",  r = 0.79, N = 161", cex = 2 )
abline(lm(FDcli ~ FDapt, col="black"))
dev.off()
*Jibrin Adejoh Alhassan (Ph.D)*
Department of Physics and Astronomy,
University of Nigeria, Nsukka


On Sun, Feb 4, 2024 at 5:03 PM Jibrin Alhassan <jibrin.alhassan using unn.edu.ng>
wrote:

> Hi Elo,
> It gave this error message:
> CR_plot2.R:14:37: unexpected string constant
> 13: plot(FDapt,FDcli, pch = 16,  cex.lab = 1.6, cex.axis = 1.4, cex.main =
> 0.8, font.lab = 1.7, font.axis = 1.7,  col = "red",main = "Simultaneous
> Events at CLMX and APTY",ylab="CLMX",xlab="APTY")
> 14: text(-8,-8, "expression(R^2*"=  0.62"),  r = 0.79, N = 161"
>                                         ^
> *Jibrin Adejoh Alhassan (Ph.D)*
> Department of Physics and Astronomy,
> University of Nigeria, Nsukka
>
>
> On Sun, Feb 4, 2024 at 4:45 PM Jibrin Alhassan <jibrin.alhassan using unn.edu.ng>
> wrote:
>
>> Thank you Zhao for the code. When I replotted the graph after inserting
>> the code in my script, it gave me this error message without plotting the
>> graph:
>> Warning message:
>> In lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) :
>>  extra argument ‘col’ will be disregarded.
>> My regards.
>> *Jibrin Adejoh Alhassan (Ph.D)*
>> Department of Physics and Astronomy,
>> University of Nigeria, Nsukka
>>
>>
>> On Sun, Feb 4, 2024 at 3:21 PM Jinsong Zhao <jszhao using yeah.net> wrote:
>>
>>> ?plotmath
>>>
>>> expression(R^2==0.62)
>>>
>>> On 2024/2/4 18:10, Jibrin Alhassan wrote:
>>> > I have done a scatter plot in R. I want to insert the coefficient of
>>> > determination R^2 = 0.62 as a text in the plot. I have tried to write
>>> R^2
>>> > but could not produce R2. I would appreciate it if someone could help
>>> me
>>> > with the syntax. I have tried:  expression(paste("", R^2,"=", 0.62)),
>>> but
>>> > it did not produce R squared, rather it gave me error messages. Thanks.
>>> > Jibrin Alhassan
>>> > *Jibrin Adejoh Alhassan (Ph.D)*
>>> > Department of Physics and Astronomy,
>>> > University of Nigeria, Nsukka
>>> >
>>> >       [[alternative HTML version deleted]]
>>> >
>>> > ______________________________________________
>>> > R-help using r-project.org 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.
>>>
>>> ______________________________________________
>>> R-help using r-project.org 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.
>>>
>>

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