Corrections should be made so that:
theme_tern_bw() changed to theme_bw()theme_tern_gray() changed to theme_gray()
Themes should be created like theme_minimal(), theme_classic()
Caution should be made to make distinction between the ggplot2::theme_XYZ() and ggtern::theme_XYZ(), if, the former is called (which it is in the current code) at some point (as a starting base point) by the latter.
Corrections should be made so that: theme_tern_bw() changed to theme_bw() theme_tern_gray() changed to theme_gray()
Themes should be created like theme_minimal(), theme_classic()
Caution should be made to make distinction between the ggplot2::theme_XYZ() and ggtern::theme_XYZ(), if, the former is called (which it is in the current code) at some point (as a starting base point) by the latter.