[R] plot character

[Marc Schwartz]

On Tue, 2003-07-22 at 11:59, Luis Miguel Almeida da Silva wrote:
> Dear helpers
>  
> Is it possible to plot with a desired character? For example "tr" for training error and "te" for test error.
> I tried 
>  
> plot(x,y,pch="tr")
>  
> but only appears "t" in the plot


One option is to use text(x, y, "TextSymbol") for your point symbols.
This will by default place the "TextSymbol" in the plot region centered
on x,y.

You would first call:

plot(x, y, type = "n") 

so that no points are plotted.

Then use:

text(x, y, "tr")

and

text(x, y, "te")

for each set of x,y coordinates as appropriate.

You can use the 'cex' argument to text() to adjust text size and of
course others for color, etc.

HTH,

Marc Schwartz