The help page for colorRampPalette reads in part
alpha: logical: should alpha channel (opacity) values should be returned? which should probably be alpha: logical: should alpha channel (opacity) values be returned? This is in (2016-02-09 r70138) -- sorry if I missed an update. cheers Ben Bolker ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel