I was going to add Oleg's and my version of the dragon curve to the rosetta code page, but I am not seeing the confirmation code graphics so I can not register nor post anonymously there.
If someone else could add an entry for J, I would appreciate it. Also, if someone could identify the name of the host which provides the confirmation code graphics, so I can check my firewall settings, I would appreciate it. Thanks, -- Raul P.S. The rosetta code page for dragon curve is http://rosettacode.org/wiki/Dragon_curve and here is my proposed entry: =={{header|J}}== require 'plot' start=: 0 0, 1 0,: 1 1 step=: ],{: +"1 (2 2$0 _1 1 0) +/ .*~ |[EMAIL PROTECTED]: -"1 {: plot<"1|:step^:12 start In english: Start with an L shaped geometry. For each step of iteration, retrace that geometry, but oriented 90 degrees about its original end point. To show the curve you need to pick some arbitrary number of iterations. Any L-shaped set of points is suitable for start. (For example, -start+123 works just fine though of course the orientation and coordinates will be different.) For a more colorful display, with a different color for the geometry introduced at each iteration, replace that last line with: ([:pd[:<"1|:)every'reset';|.'show';step&.>^:(i.16)<start ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
