[R] Help

[Jibrin Alhassan]

Hi Kimmo,
The code you sent has worked for me. Thank you very much.
*Jibrin Adejoh Alhassan (Ph.D)*
Department of Physics and Astronomy,
University of Nigeria, Nsukka


On Mon, Feb 5, 2024 at 7:40 AM Kimmo Elo <kimmo.elo using utu.fi> wrote:

> Hi,
>
> the command line with 'text' should be:
>
> text(-8,-8, expression(R^2 * " = 0.62,  r = 0.79, N = 161"), cex = 2 )
>
> Best,
>
> Kimmo
>
> su, 2024-02-04 kello 17:16 +0100, Jibrin Alhassan kirjoitti:
> > 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]]
> > > > > >
> > > > > > ______________________________________________
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> > > > > > 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
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> > > > > and provide commented, minimal, self-contained, reproducible
> > > > > code.
> > > > >
> > > >
> >
> >         [[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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