[R] ternary diagrams with contours

[Kyriakos Kachrimanis]

> Please stop sending the same message repeatedly: this is the *third* copy.

I am sorry for the repeated messages and the unnecessary mail trafic in the
list. It was not done deliberately. Outlook Express repeatedly crashed when
I tried to send the message and, while I thought it was not sent, I was
surprised to see that there were three copies in my "sent items" folder.

Thank you very much for the reply.