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.alhas...@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.alhas...@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 <jsz...@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@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@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@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@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.