[R] plot ᵒ C in graph axis label

baptiste auguie baptiste.auguie at googlemail.com
Fri Oct 2 08:58:59 CEST 2009


You cannot start with a "*" in expression(). Try this,


or even, as a short-cut,




2009/10/2 e-letter <inpost at gmail.com>:
> Readers,
> I have tried to use a plotmath command to add the temperature degree
> sign (i.e. ᵒ C) to the axis label of a graph:
>> x<-(1:10)
>> y<-(200:191)
>> plot(x~y,ylab=expression(*degree~C))
> Error: syntax error, unexpected '*', expecting ',' in
> "plot(x~y,ylab=expression(*"
> According to plotmath manual, the syntax is '*degree' and I am able to
> use this command when a number precedes the asterisk (e.g.
> ylab=expression(0*degree~C)). But I want to omit the need for a number
> before the degree sign. Any advice please?
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