Am I right in thinking that viewmat takes a 2d array and treats it as if each number is a pixel and its value is its colour? Thanks.
___________________________ David Vaughan On 6 Nov 2011, at 20:12, "Linda Alvord" <[email protected]> wrote: > Here's another option: > > S=: 13 :'''+.''{~([:+./*.)"1/~#:i.y' > S > '+.' {~ [: ([: +./ *.)"1/~ [: #: i. > > S 8 > ++++++++ > +.+.+.+. > ++..++.. > +...+... > ++++.... > +.+..... > ++...... > +....... > > Linda > > > > > > > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Roger Hui > Sent: Saturday, November 05, 2011 2:10 PM > To: Programming forum > Subject: Re: [Jprogramming] Binary Addresses Method > > I believe the "and" in your pseudocode maps to 17 b. (bitwise and). Thus: > 0 = 17 b./~ i.256 > > For example, using the boolean matrix result to index into '.*', > > '.*' {~ 0 = 17 b./~ i.16 > **************** > *.*.*.*.*.*.*.*. > **..**..**..**.. > *...*...*...*... > ****....****.... > *.*.....*.*..... > **......**...... > *.......*....... > ********........ > *.*.*.*......... > **..**.......... > *...*........... > ****............ > *.*............. > **.............. > *............... > > > > On Sat, Nov 5, 2011 at 10:50 AM, mikel paternain > <[email protected]>wrote: > >> >> >> >> In the amazing book Chaos and Fractals New frontiers of Science, the >> authors described a simple algorithm for making the Sierpinski Gasket. > This >> is perhaps the most short and efficient algorithm (in non tacit > programming >> languages) for computing this fractal. >> The basic algorithm is(in pseudocode): >> >> Define x,y >> For y=0 to 255 >> For x=0 to 255 >> If /x And y)=0 Then Pset(x,y) //Pset is a function for drawing >> the point x,y >> Next x >> Next y >> End >> >> With my little experience inJ the question is how translate this code to J >> . Help me please! >> Thanks in advance!! >> >> Mikel >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
