On 8/14/2019 4:22 PM, Otared Kavian wrote:
Hi Hans,
Thank you very much for the new features! I haven't yet read all the mag-1104-mkiv.pdf where you explain some of them, but after modifying one of your examples, I noticed that some funtions get a strange graph, which is probably due to the fact that metafun2 is interpolating between points in a way which is not correct. For instance, in the following example (which is a slight modification of yours), the curve drawn is not a graph, in the sense that for some values of x it seems to be two or more values of y.
How does metafun 2 traces the curve between two discretization points?
it doesn't, it just connects the dots, so, just use a smaller step, like xstep = .01 (The upcoming luagraph module will provide some interpolators so at some point we can hook these in.) (btw, there are a lot of extra math functions, also or complex numbers)
Best regards: OK
%%% begin draw-2.tex
\starttext \startMPcode{doublefun} draw lmt_function [ xmin = 1.0, xmax = 2.5066283, xstep = .1, ymin = -2, ymax = 2, % xticks = "bottom", xsmall = 80, xlarge = 20, % yticks = "left", ysmall = 40, ylarge = 4, code = "1.5 * math.sin(2*x^2)", xlabels = "yes", ylabels = "yes", ycaption = "\strut\tfd \rotate[rotation=90]{vertical}", xcaption = "\strut\tfd horizontal", pointsymbol = "dot", pointsize = 4, pointcolor = "orange", sx = 2mm, sy = 4mm, linewidth = .025mm, offset = .1mm, ] xsized 8cm ; \stopMPcode
\stoptext
%%% end draw-2.tex
Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------