Thanks, Thomas. I’ve done some of that but you suggest some better keywords to search with. I will give it another go.
Roger > On Jan 22, 2022, at 12:34 PM, Thomas von Fintel via use-livecode > <use-livecode@lists.runrev.com> wrote: > > I am not a mathematician, but this kind of equation is called implicit > function, implicit equation or implicit curve. If you search for that > combined with draw or plot, you might find explanations. But it seems to be > complicated. > > Hope this helps. > Thomas > > > >> Am 22.01.2022 um 17:56 schrieb Roger Guay via use-livecode >> <use-livecode@lists.runrev.com>: >> >> This equation for the lemniscate, (x^2+y^2)^2 = 100*(x^2-y^2) is an example >> of a 2 variable function f(x,y). I am trying to figure how to plot such >> functions in LC. I can do simple functions like y = f(x) and x = f(t), y = >> f(t). Calculators such Good Grapher on the Mac do these f(x,y) functions >> with apparent ease. How? >> >> The only thing I’ve come up with so far is to imbed a y-repeat loop within >> an x-repeat loop where for each value of x (within a certain range), every >> value of y (within a certain range) is tested for the equation being true. >> If true, a point is generated in a point list of a polygon. I think, in >> principle, this should work and with persistence, I might be able make it >> work, but so far, no cigar. >> >> Is there a better way? >> >> >> Thanks, >> >> Roger >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your subscription >> preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
