Re: Gradient fill as Background for Plot

*To*: mathgroup at smc.vnet.net*Subject*: [mg89628] Re: Gradient fill as Background for Plot*From*: "David Park" <djmpark at comcast.net>*Date*: Sun, 15 Jun 2008 06:14:48 -0400 (EDT)*References*: <g3033p$maq$1@smc.vnet.net>

You can use a DensityPlot as a background. But you may want to specify the specific PlotRange so it will coordinate with the other plot elements. Here is how I would do it with the Presentations package. We just draw the background first and then put the other plot elements on top of it. Rescale is a convenient method to control what values are fed to the color function. Needs["Presentations`Master`"] Draw2D[ {DensityDraw[ Rescale[-Rescale[x, {-1, 0}] + Rescale[y, {0, 12}], {-1, 1}], {x, -1, 0}, {y, 0, 12}, ColorFunctionScaling -> False, ColorFunction -> (Blend[{Yellow, White}, #] &) ], Draw[-1/x, {x, -1, 0}]}, AspectRatio -> 1/2, Frame -> True] For something more colorful you could try: Draw2D[ {DensityDraw[ Rescale[-Rescale[x, {-1, 0}] + Rescale[y, {0, 12}], {-1, 1}], {x, -1, 0}, {y, 0, 12}, ColorFunctionScaling -> False, ColorFunction -> ColorData["BeachColors"] ], Draw[-1/x, {x, -1, 0}]}, AspectRatio -> 1/2, Frame -> True] Since you can make the DensityPlot anything you want you can have any kind of background. -- David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ <lehin.p at gmail.com> wrote in message news:g3033p$maq$1 at smc.vnet.net... > Hello, > I wish Plot to have gradient fill background (from right bottom to > left top the fill color becomes lighter). I hope there is simple > solution but I did not find in the Documentation any example for > this. > I have found a simple nice solution for uniform fill: > Plot[-1/x, {x, -1, 0}, Background -> Lighter[Yellow, .8]] > But I have not find how to make gradient fill. > Does anyone know a solution? > > P.S. More commonly, I would like to know (if it is possible) how I can > specify any arbitrary (may be piecewise) function for filling the > Background. >