[R] Help required with png graphic production as text has shadows?

Karl Ove Hufthammer karl at huftis.org
Tue Apr 13 08:51:51 CEST 2010

Alice Johnstone wrote:

> I have produced a series of graphs with the png command, however when I
> have finally printed these out the black text appears to have a colour
> shadow with blue or red on either side of the letter.

What you’re seeing is likely subpixel antialiasing. How to ‘fix’ this 
depends on your platform. For Windows, I believe you have to turn off 
ClearType for fonts. For Linux, see ?X11.options.

Karl Ove Hufthammer

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