He probably expected you to follow the "Types" link to the page where radar is mentioned:
http://www.jsoftware.com/jwiki/Plot/Types Basically, plot gives you a variety of ways of of plotting the data. Hopefully the names are descriptive. I do not think anyone has taken the time to write documentation characterizing the notable details of these options. -- Raul On Thu, Mar 22, 2012 at 10:00 AM, Linda Alvord <lindaalv...@verizon.net> wrote: > Chris, The wiki page didn't solve the mystery of 'radar' > Load 'plot' > T=:2p1 > d=: 13 :'(0{x)-(-/x)*(i.y)%<:y' NB. domain intervals > tf=:1 o. 3*y > plot 1 o. tf > 'radar' plot tf > > The lines above follow the suggestion of Henry Rich and work like a charm, > but how does 'radar' do its magic? > > When I tried the suggestions in the wiki page, here's what happened. > Load 'jzplot' > c=: conew 'jzplot' > plot__c tf > plot__c 'radar' tf > |option not found: radar: signal > | signal'option not found: ',j > > The polar graph of the trifolium fails. > > Linda > > > > -----Original Message----- > From: programming-boun...@jsoftware.com > [mailto:programming-boun...@jsoftware.com] On Behalf Of chris burke > Sent: Wednesday, March 21, 2012 8:45 PM > To: Programming forum > Subject: Re: [Jprogramming] Challenge 8 A Shamrock for St. Patrick > > See: http://www.jsoftware.com/jwiki/Plot/Class > > On Thu, Mar 22, 2012 at 7:49 AM, Linda Alvord > <lindaalv...@verizon.net>wrote: > >> Copy the expression below into ijix and run display. A lovely graph >> of a trifolium appears. It seems that it is arriving by mental telepathy. >> There >> is no sign of 'radar' anyhere. Use load 'plot' and there is no >> sign of 'radar'. It is not in names_j_ or names_z_ . So where and > what is it? >> >> -----Original Message----- >> From: programming-boun...@jsoftware.com >> [mailto:programming-boun...@jsoftware.com] On Behalf Of Henry Rich >> Sent: Wednesday, March 21, 2012 7:29 AM >> To: Programming forum >> Subject: Re: [Jprogramming] Challenge 8 A Shamrock for St. Patrick >> >> Cute! J version: >> >> 'radar' plot 0 2p1;'1 + (cos 3*y) + *: sin 3*y' >> >> Henry Rich >> >> On 3/21/2012 5:55 AM, Boyko Bantchev wrote: >> > FWIW, the cleanest mathematical / programmable trefoil that I know >> > of is the following (I am too lazy to do it in J, so Gnuplot): >> > >> > set size ratio 1.08 >> > set parametric >> > set polar >> > plot [0:2*pi] t,1+cos(3*t)+sin(3*t)**2 >> > -------------------------------------------------------------------- >> > -- 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
