[R] Text with differents colors in a plot / Detecting if text exists

Jim Lemon jim at bitwrit.com.au
Mon Jul 16 12:01:46 CEST 2007

Maja Schröter wrote:
> Hi everybody,
> I want to write some text in a plot.
> That's simple I know. But I want to make use of different colors.
> Eg. text(x,y,paste("Sunderland","high")).
> Then Sunderland should be black and "high" red.
> Has anyone an idea?
> By the way. I'm looking for a function or something similar, that can check whether there is text in some regions on the plot. 
> Because I don't want to overwrite an existing text with a new one.
Hi Maja,
For your first question:


i.e., don't form a single string so that you can specify different 
colors and positions for the two words.

For the second one, I am about to upload a new version of the plotrix 
package that contains a function named "emptyspace". This tries to find 
the largest rectangle on a plot that has nothing plotted within it.


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