[R] YAPMQ - Yet Another PlotMath Question

Thompson, David (MNR) David.John.Thompson at ontario.ca
Thu Jun 19 22:30:56 CEST 2008

>-----Original Message-----
>From: Peter Dalgaard [mailto:p.dalgaard at biostat.ku.dk] 
>Sent: June 19, 2008 04:23 PM
>To: Thompson, David (MNR)
>Cc: r-help at r-project.org
>Subject: Re: [R] YAPMQ - Yet Another PlotMath Question
>Thompson, David (MNR) wrote:
>> Hello,
>> I'm having trouble finding (remembering) how to pass values into text
>> functions in plots, as demonstrated by:
>> slope <- 45 ; plot(1:10) ; text(2, 7, labels = 
>expression(45~degree)) ;
>> text(2, 5, labels = paste(bquote(.(slope)), expression(degree)))
>text(2, 5, labels = bquote(paste(.(slope), degree)))
>Notice that paste()ing two expressions does not yield an expression 
>result. Instead, it deparses both arguments and gives a 
>character string.

Thank you Peter.
Are all the syntactic elements noted in plotmath{grDevices} available to

Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources
david.john.thompson at ontario.ca

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