Sometimes your description seems accurate. However, consider: viewmat i.10 or viewmat 2
-- Raul On Mon, Nov 7, 2011 at 1:36 PM, David Vaughan <[email protected]> wrote: > 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 > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
