RE: RE: Colors

*To*: mathgroup at smc.vnet.net*Subject*: [mg35038] RE: [mg34998] RE: [mg34986] Colors*From*: "DrBob" <majort at cox-internet.com>*Date*: Thu, 20 Jun 2002 02:13:59 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Here's a solution that emphasizes the original function a bit more than the reflection. It illustrates the nice way various graphics primitives can be used without confusion, using David Park's DrawGraphics package: Needs["DrawGraphics`DrawingMaster`"] ClearAll[ReY5] ReY5[f_, {x_, x1_, x2_}] := Module[{g}, Draw2D[ {Red, Thickness[0.005], g = Draw[f, {x, x1, x2}], Blue, Thickness[0.004], g /. DrawingTransform[-#1 &, #2 &]}, Axes -> True, Background -> Bisque ] ] ReY5[Sin[t], {t, -2, 3}] ReY5[{Sin[t], Cos[t]}, {t, -2, 3}] Bobby Treat -----Original Message----- From: David Park [mailto:djmp at earthlink.net] To: mathgroup at smc.vnet.net Subject: [mg35038] [mg34998] RE: [mg34986] Colors Juan, This is a question I am going to use to promote the DrawGraphics package at my web site. DrawGraphics deals directly at the level of primitive graphics and allows their direct manipulation so it is easier. (The package also automatically loads the Graphics`Colors` package so we can use color names directly.) This draws three curves for positive t in black and the reflected curves in Red. DrawingTransform just implements the rule you used, but also works properly with the various graphic primitives such as Text. Needs["DrawGraphics`DrawingMaster`"] Draw2D[ {g = Draw[{Sin[t], t^3, Cos[t]}, {t, 0, 4}], Red, g /. DrawingTransform[-#1 &, #2 &]}, Axes -> True]; David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ > From: Juan Erfá [mailto:erfa11 at hotmail.com] To: mathgroup at smc.vnet.net > > Hi,I have the function ReY to reflect a curve about the Y axe: > > In[4]:= ReY[f_, {x_, x1_, x2_}] := Module[{p, q}, > p = Plot[f, {x, x1, x2}, DisplayFunction -> Identity]; > q = p /. {u_, v_} -> {-u, v}; > Show[p, q, DisplayFunction -> $DisplayFunction]] > > For ReY[Sin[t],{t,0,4}], I get both functions in black. > > I would like to use Hue[] to paint the curves in different > colors, but after > tryng to put Hue[] everywhere I get nothing. > > Another question is: What I have to do to allow ReY to work with > more than > one function, I mean: ReY[{Sin[t], t^3, Cos[t], ...},{t, 0,4}]. > > Finally: How I can paint the axes in other color then black?. > > Regards.Juan >