plot (y;~]) x
R.E. Boss > -----Oorspronkelijk bericht----- > Van: programming-boun...@jsoftware.com [mailto:programming- > boun...@jsoftware.com] Namens Linda Alvord > Verzonden: maandag 19 maart 2012 8:18 > Aan: 'Programming forum' > Onderwerp: Re: [Jprogramming] Several questions about j > > Ooops. > > I had rearranged my e-mail by order of the sender, and I thought I was in > "current" time so I responded to an e-mail from August 15, 2011. However, I > guess my comments are just as troubling as they would have been then. > What > about the negative numbers in the x-axis? > > Linda > > -----Original Message----- > From: programming-boun...@jsoftware.com > [mailto:programming-boun...@jsoftware.com] On Behalf Of Linda Alvord > Sent: Monday, March 19, 2012 3:11 AM > To: 'Programming forum' > Subject: Re: [Jprogramming] Several questions about j > > In my first example plot didn't do a good job with i:5 . The y-axis is > labeled correctly but the x-axis is not. > > This is a better example of a plot. (The actual plot doesn't copy into an > e-mail.) The axes are labeled correctly. > > load 'plot' > x=:i.6 > f=: 13 :'x^2' > g=: 13 :'x^3' > h=: 13 :'(f - g)x' > h > [: (f - g) [ > h x > 0 0 _4 _18 _48 _100 > i=: 13 :'(f x)-g x' > i x > 0 0 _4 _18 _48 _100 > plot h x > > Actually the problem appears to be with negative numbers in the domain. > This > will also not show the x-axis correctly. > > x=:_5+i.11 > x > _5 _4 _3 _2 _1 0 1 2 3 4 5 > y=: 13 :'x^2' > plot y x > > Linda > > > -----Original Message----- > From: programming-boun...@jsoftware.com > [mailto:programming-boun...@jsoftware.com] On Behalf Of Kim Kuen Tang > Sent: Monday, August 15, 2011 5:09 AM > To: programming@jsoftware.com > Subject: [Jprogramming] Several questions about j > > > Hi everyone, > > here are some newbie questions regarding the differences between j and > kdb. > > Are verbs ( dyad or monad) first-class citizen in j? > Is it possible to forward a verb to another verb? > Is it possible to box a verb into list ? > Is it possible to have a dictionary like the case in kdb? Something like : > (`a`b`c)!(1 2 3) > > What i want to do in j is to program a verb (i will call it p) that will > accept a monad and output a plot of this monad. > > For example: > > f=. 3: 0 'y^2' > p=. (implementation) > > p f will output the plot of f between -5 and 5. > > > Thanks for any comments and answers. > > Reagrds, > > Kim > ---------------------------------------------------------------------- > 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
