Yes, but currently only alpha=0 and alpha=255 are supported by the available devices that I know of (and I introduced this).
Adding alpha-level support is complicated for the devices people normally use, although it would be trivial in PDF1.4. On Wed, 12 Nov 2003, Crispin Miller wrote: > Does anyone know whether it is possible to construct a colour for > plotting with an alpha value as well as simply specifying rgb values? -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
