On Tue, Mar 2, 2010 at 5:28 PM, Dr. David Kirkby <david.kir...@onetel.net> wrote: > William Stein wrote: >> >> Hi, >> >> A student of mine is going to add to sage the capability of plotting >> lots and lots of fractals easily. E.g., >> >> sage: fractals.[tab] >> lots of stuff >> >> sage: fractals.julia([params]).show(figsize=10) >> [up pops a julia set] >> >> The trac ticket where this starts is here: >> http://trac.sagemath.org/sage_trac/ticket/8423 >> >> This isn't going to be some complicated fancy object oriented >> abstract dynamical metaclassed framework. It's just a bunch of >> functions to draw fractals. And at first it could even be slow >> (though obviously some cython master will probably clear through it at >> some point and make everything really fast, without having to change >> or write any docs). I can imagine that most of the files will consist >> of examples and docstrings rather than actual code, too. >> >> The point of this email: if you like plotting fractals, and have some >> potentially useful code to contribute, then please post to this thread >> or http://trac.sagemath.org/sage_trac/ticket/8423 with them. Or if >> you really want to help, then do so. >> >> -- William >> > > Those sorts of images could be good for your calender. > > I recall many years ago programming the 80387 maths coprocessor chip at the > assembly level to generate the fastest Mandlebrot set I could. If I recall > correctly, it ran at 25 MHz, which I think was the fastest any 80386/80376 > chip run at.
So how long did it take to calculate the 256x265 pixels mandelbrot set? I remember it took couple hours for me (I wrote it in Pascal...). > > There is the open-source 'fractint' program which does the same sort of > thing, but in integer maths, which is obviously quicker, though the floating > point processors now are a lot better than they used to be. I recall > computing tables of sin() and cos() for Monte Carlo simulations, then using > a lookup rather than compute the sines and cosines each time, as it was too > slow. Now, you are better to just call sin or cos in an FPU, rather than > look them up in a table. Right. Ondrej -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
