For instance: function plot:predraw_cb(canvas) canvas:Foreground(cd.EncodeColor(0, 0, 255)) canvas:Rect(200, 700, 200, 700) -- pixels canvas:Line(200, 700, 700, 200) -- pixels
local x1, y1 = iup.PlotTransform(plot, 1, 0.9) -- plot coordinates local x2, y2 = iup.PlotTransform(plot, 1, 0.1) canvas:Line(x1, y1, x1, y2) -- pixels end Attached is the complete sample. Best, Scuri 2018-05-29 11:53 GMT-03:00 Johann Philippe <johannphili...@yahoo.fr>: > Yes in Lua. > > > Le lundi 28 mai 2018 à 23:09:53 UTC+2, Antonio Scuri < > antonio.sc...@gmail.com> a écrit : > > > You mean in Lua, right? > > Best, > Scuri > > Em seg, 28 de mai de 2018 17:11, Johann Philippe <johannphili...@yahoo.fr> > escreveu: > > Thank you Antonio. > I don't find the way to draw manually using CD inside the plot (created > with iupplot). The plot.CANVAS returns that the actual canvas name is "CD" > (as a string), but the CD variable returns nil. > > Could you explain how to draw in background, using postdraw_cb and CD > drawing method ? > > Le lundi 28 mai 2018 à 13:11:58 UTC+2, Antonio Scuri < > antonio.sc...@gmail.com> a écrit : > > > > I need to interact with the callback with only one of those two > datasets. Is that possible ? > > Only manually testing inside the callback. > > > Or is there a way to draw in the "background" > > You can use the PREDRAW_CB, POSTDRAW_CB callbacks, but everything must > be manually drawn with CD. > > Best, > Scuri > > > 2018-05-27 13:18 GMT-03:00 Johann Philippe via Iup-users < > iup-users@lists.sourceforge.net>: > > Dear all, > I'm using IupPlot, and having a small issue here. I have two datasets, and > i wish one of them could be not responding to FindSample function. I need > to interact with the callback with only one of those two datasets. Is that > possible ? > > Or is there a way to draw in the "background" of the plot, like drawing a > curve that is not interacting with callbacks, but can be change > algorithmically ? > > Thanking you in advance > > Johann > > ------------------------------ ------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ______________________________ _________________ > Iup-users mailing list > Iup-users@lists.sourceforge. net <Iup-users@lists.sourceforge.net> > https://lists.sourceforge.net/ lists/listinfo/iup-users > <https://lists.sourceforge.net/lists/listinfo/iup-users> > > >
plot.lua
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