The digits might be random but the spacings between successive numbers are constrained unlike for the sequence of primes?
2010/1/8 Aai <[email protected]>: > 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 > -- John Coleman puts global "warming" into perspective: http://climategate.tv/?p=719 Professor Lindzen (http://www-eaps.mit.edu/faculty/lindzen.htm) on global "warming": http://climategate.tv/?p=721 John P. Costella Ph.D., neat colour coded analysis of the ClimateGate emails: http://assassinationscience.com/climategate/ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
