R devel - Aug 2009 - math symbol + value of a variable in legend.

Hi R users:

I will like to have a legend with math symbols and also with
the value of a variable.

But I cannot obtain both at the same time (symbol + value of a
variable):

Here is a reproducible example:

m1<-5
m2<-12
plot(1:5,1:5,type="n")
legend("topleft",legend=c(paste(expression(mu),"=",m1),expression(paste(mu,"=",m2))),lty=1:2)

Thank you for your help.

Kenneth

PD: Using R 2.9.2 on Linux ubuntu 2.6.28-15-generic #49-Ubuntu SMP
Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linuxu

On Aug 25, 2009, at 4:30 PM, Kenneth Roy Cabrera Torres wrote:
> Hi R users:
>
> I will like to have a legend with math symbols and also with
> the value of a variable.
>
> But I cannot obtain both at the same time (symbol + value of a
> variable):
>
> Here is a reproducible example:
>
> m1<-5
> m2<-12
I think I am violating a fortune but this "worked":

plot(1:5,1:5,type="n")
   
legend 
("topleft",legend=c(eval(substitute(
expression(paste(mu,"=",m1)),
list(m1=m1) )) , eval(substitute( expression(paste(mu,"=",m2)),  
list(m2=m2) ) )), lty=1:2)

And efforts at simplification were at least partly successful:

legend("topleft",legend=c(eval(substitute( expression(mu == m1),  
list(m1=m1) )) ,
                           eval(substitute( expression(mu == m2),  
list(m2=m2) ) )),
                   lty=1:2)


> plot(1:5,1:5,type="n")
> legend 
> ("topleft 
> ",legend 
>
=c(paste(expression(mu),"=",m1),expression(paste(mu,"=",m2))),lty=1:2)
>
> Thank you for your help.
>
> Kenneth
-- 

David Winsemius, MD
Heritage Laboratories
West Hartford, CT

Check out bquote as in this example:

https://stat.ethz.ch/pipermail/r-help/2009-August/209373.html

On Tue, Aug 25, 2009 at 4:30 PM, Kenneth Roy Cabrera
Torres<krcabrer at une.net.co> wrote:
> Hi R users:
>
> I will like to have a legend with math symbols and also with
> the value of a variable.
>
> But I cannot obtain both at the same time (symbol + value of a
> variable):
>
> Here is a reproducible example:
>
> m1<-5
> m2<-12
> plot(1:5,1:5,type="n")
>
legend("topleft",legend=c(paste(expression(mu),"=",m1),expression(paste(mu,"=",m2))),lty=1:2)
>
> Thank you for your help.
>
> Kenneth
>
> PD: Using R 2.9.2 on Linux ubuntu 2.6.28-15-generic #49-Ubuntu SMP
> Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linuxu
>
> ______________________________________________
> R-help at r-project.org mailing list
> 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.
>

Try this:

legend("topleft", c(as.expression(bquote(mu == .(m1))),
as.expression(bquote(mu == .(m2)))))

On Tue, Aug 25, 2009 at 5:30 PM, Kenneth Roy Cabrera Torres <
krcabrer@une.net.co> wrote:
> Hi R users:
>
> I will like to have a legend with math symbols and also with
> the value of a variable.
>
> But I cannot obtain both at the same time (symbol + value of a
> variable):
>
> Here is a reproducible example:
>
> m1<-5
> m2<-12
> plot(1:5,1:5,type="n")
>
>
legend("topleft",legend=c(paste(expression(mu),"=",m1),expression(paste(mu,"=",m2))),lty=1:2)
>
> Thank you for your help.
>
> Kenneth
>
> PD: Using R 2.9.2 on Linux ubuntu 2.6.28-15-generic #49-Ubuntu SMP
> Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linuxu
>
> ______________________________________________
> R-help@r-project.org mailing list
> 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.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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