R help - Feb 2024 - Help

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

On Sun, 4 Feb 2024 at 17:26, Jibrin Alhassan <jibrin.alhassan at
unn.edu.ng> wrote:
>
> 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.
This works for me:

curve(dnorm, from=-3, to=3, main="Normal Distribution")
text(x=0, y=0.1, cex=1.5, expression(R^2 == 0.62))

if you are used to write expression using LaTeX math , then maybe you
like the latex2exp package:
curve(dnorm, from=-3, to=3, main="Normal Distribution")
text(0, 0.1, latex2exp::TeX("$R^2 = 0.62$"))

Regards
Martin

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 at 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 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.
> > > > 
> > > 
> 
> ????????[[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.