R help - Feb 2024 - Help

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 at 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 at 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 at 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.
>
	[[alternative HTML version deleted]]

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 at
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 at 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 at 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 at 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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