It seems my Gem is missing [yuv2rgb] (and rgb2yuv ). A bit of history: I'm using pd0.39-extended from at.or.at, but that version of Gem had problems (see previous exchanges for the details) I replaced the pd.gem_drawin file from a more recent CVS version and that fixed many problems. I am running it on a macbook, osx10.4 [rgb2hsv] does exist.
Thanks Oded
-- ___________________________________________________ Oded Ben-Tal http://ccrma.stanford.edu/~oded oded@ccrma.stanford.edu