Bob, Regarding the extended Plus (dyad) animation:
I like most of it, but am really put off by two things, the example involving halves and the overall movement and blinking. The movement and blinking is excessive and distracting to me, so I want much less. I am thinking that maybe the only thing that should blink is the plus sign and maybe an arrow, not the arguments. And nothing except the graph should have movement, only repositioning, except perhaps the plus sign or the arrow could pulse or expand, but not move. The halves example lost me until I looked really hard and I knew what you were trying to show; the information in the green bottom was especially hieroglyphic to me. I wonder if a 2 stage development might work better here, where 2 becomes 4r2 and then 3r2+4r2 becomes 7r2? I just don't have any good ideas for visualizing adding halves, though, and hope others have ideas. A lesser problem for me, as I said before, is the vector and array examples, which I believe should be handled elsewhere because they are rank/shape issues. I do like these new extended demos though and want to encourage and thank you for them. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
