I'd like to ask you about your book on matricial gnomonics, its prize and how to get it. I use Fer de Vries' matrix algorithm to calculate any planar sundial, and I believe it's a perfect method to implement into computers. I suppose you've extended his method, don't you? and I'd like to see how you did it. By the way, have you tried to do the matrix calculations through quaternions? The calculations are quite cumbersome, but very straightforward and concise. Best regards, Anselmo -
- Re: Harold E. Brandmaier? Anselmo P�rez Serrada
- Re: Harold E. Brandmaier? GinnyandHalB