R help - Jul 2009 - treating a data symbol like a character

Hi, is there a way to treat a data symbol, e.g. one with pch = 16, as a
character?
Specifically, I'm interested in creating a line of text as follows using the
text() function

O alpha O beta O gamma

where the "O" is pch 16 and filled with a specific color.

Not sure if this is possible or not.

Thanks,
Andrew

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Hi Andrew,
Do you want to put the symbols you described as a legend in a plot?  If so,
here is one way:

x <- rnorm(3)
plot(x, pch = 16, cex = 1.1, col = 1:3)
legend('topleft', ncol = 3,
        c(expression(alpha), expression(beta), expression(gamma)), pch = 16,
cex = 1.1, col = 1:3)

Is you do not want to use legend, but place the symbols in each plot, then:

plot(x, pch = 16, cex = 1.1, col = 1:3)
text(1.05,1.01*x[1], expression(alpha) )
text(2.05,1.01*x[2], expression(beta) )
text(2.95,1.01*x[3], expression(gamma) )

should get you close.

See ?text, ?expression and ?legend for more information.

HTH,

Jorge


On Thu, Jul 9, 2009 at 10:53 AM, Andrew Yee <yee@post.harvard.edu> wrote:
> Hi, is there a way to treat a data symbol, e.g. one with pch = 16, as a
> character?
> Specifically, I'm interested in creating a line of text as follows
using
> the
> text() function
>
> O alpha O beta O gamma
>
> where the "O" is pch 16 and filled with a specific color.
>
> Not sure if this is possible or not.
>
> Thanks,
> Andrew
>
>        [[alternative HTML version deleted]]
>
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