HI, This code is part of a code I used to do a linear regression:>points(var1~var2,data=Regress,pch=21,bg="grey") >reg11<-lm(var1~var2,data=Regress) >abline(lm(var1~var2,data=Regress),lty=2,lwd=2,col="grey") >legend("topleft",legend>c("NDII from composite", >"y= 0.0007x - 0.1156",expression(paste(r^2 == 0.88)),"p-value <0.001"), >pch=21, >bty="n")But I have a problem to complete the legend. Indeed, on the legend, I want to display a point in front "Ndii from composite images." But when I run my code I get a point in front, "Ndii from composite images" but also before "y = 0.0007x - 0.1156", "r ^ 2 == 0.88," " and " p-value <0.001 "." How can I do to obtain only one point in front "Ndii from composite images"? Thank you in advance -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-legend-tp3826973p3826973.html Sent from the R help mailing list archive at Nabble.com.
Maybe by adding
col=c("grey","white","white"), bg="white
but not sure ...
Have a nice end of day,
Ptit Bleu.
--
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You're passing a vector of length 3 to the legend argument of legend(), so R is assuming that you have three things you want to display. There are two alternatives: 1. Provide legend() a legend that's a single character vector. 2. Specify that you don't want symbols for the last two of the three legend components by using pch=c(21, NA, NA). Sarah On Tue, Sep 20, 2011 at 10:13 AM, Komine <momadou at yahoo.fr> wrote:> HI, > This code is part of a code I used to do a linear regression: > >>points(var1~var2,data=Regress,pch=21,bg="grey") >>reg11<-lm(var1~var2,data=Regress) >>abline(lm(var1~var2,data=Regress),lty=2,lwd=2,col="grey") >>legend("topleft",legend>>c("NDII from composite", >>"y= 0.0007x - 0.1156",expression(paste(r^2 == 0.88)),"p-value <0.001"), >>pch=21, >>bty="n") > > But I have a problem to complete the legend. > Indeed, on the legend, I want to display a point ?in front "Ndii from > composite images." But when I run my code I get a point in front, "Ndii from > composite images" but also before "y = 0.0007x - 0.1156", "r ^ 2 == 0.88," " > and " p-value <0.001 "." > How can I do to obtain only one point in front "Ndii from composite images"? > Thank you in advance > >-- Sarah Goslee http://www.functionaldiversity.org
Thank you Sarah and Petit bleu for your help. I solved my problem with the code of Sarah. Komine -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-legend-tp3826973p3827461.html Sent from the R help mailing list archive at Nabble.com.