Probably a better idea is, as the author did, to compare e.g. with pi-digits.
I obtained ~ 1.25 million digits of pi from: http://www.gutenberg.org/etext/50 freq of the digits: ({.,#) /. ~ ds 1 125083 4 125372 5 125880 9 125689 2 125594 6 124796 3 125792 8 125376 7 125452 0 125505 fairly uniform distribution. And then apply: dr=: 0 0, 0 1, 0 _1, 1 0, _1 0, 0 0, 0 0, 0 0, 0 0,: 0 0 d=. ({.,#)/.~+/\ ds { dr 'gx gy '=. >: >./ XY=.(2{."1 d) -"1 {.~&2 <./ d Here's the alien: a very different picture. viewmat (2{"1 d) (<"1 XY) } 0$~ gx, gy # ds 1254539 gx,gy 1196 906 > For a start: replace > 11|p: i.y > with > 1 + y ?...@#10 > in primenebulaP > > > > Ik schreef op 08-01-10 13:38: > >> Did already think along the same line. Time to start an experiment. :-) >> >> The author of the idea suggested it is. He showed also examples on the >> website of purely random nature: >> http://yoyo.cc.monash.edu.au/~bunyip/primes/random.html >> >> >> >> Hallo Matthew Brand, je schreef op 08-01-10 13:27: >> >> >>> Is there anything special about primes in all of this or will other >>> sequences of increasing integers with random spacing produce similar >>> pictures? >>> >>> 2010/1/8 Aai <[email protected]>: >>> >>> >>> >>>> @ Devon and Viktor >>>> >>>> The dr I use was not a mistake. Experimenting with dr pointed me in this >>>> direction for obtaining a square picture. >>>> I also tried other values for prime 11 and concluded it being a good >>>> (the best?) choice for a pretty nebula-like picure. >>>> >>>> I also tried some x |. dr . That showed me that my original dr produces >>>> the nicest picture (i.e for me). >>>> >>>> -- >>>> Met vriendelijke groet, >>>> =@@i >>>> >>>> ---------------------------------------------------------------------- >>>> For information about J forums see http://www.jsoftware.com/forums.htm >>>> >>>> >>>> >>>> >>> >>> >>> >> >> > -- Met vriendelijke groet, =@@i ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
