Warren Thom wrote: > > I have one question about ZONWPLT. I use the program to produce > model sundials on paper. The lines for the gnomon are very helpful > to make the model because the dial and gnomon length are drawn to > the same scale. But with a bifilar dial with two threads, no lines > are drawn. Is there a simple way to know the length of each thread > for a scale dial that is drawn? >
I thank you for your kind remark to my program ZONWPLT. I only programmed to save the length of the gnomon for a "normal" sundial. I did'nt do this for the bifilar dial. One reason was that at that moment I only had one field free to record something. Otherwise I had to re-programm to much of my programs. When I look to my programs now, I would I did many more things in a different way. But the programs develloped as they did and I could do the tasks I wanted to do. For the bifilar dial just remember the values of the height of the 2 threads and take in mind the scaling factors you use with SCRPLT and/or with PRINTGL or with any other program. An easier way I can't give you. Happy dialing, Fer de Vries.
