Re: Is Orange translucent?

*To*: mathgroup at smc.vnet.net*Subject*: [mg101304] Re: [mg101271] Is Orange translucent?*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Tue, 30 Jun 2009 06:36:46 -0400 (EDT)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200906290327.XAA11660@smc.vnet.net>*Reply-to*: murray at math.umass.edu

I tried the following... f[x_] := Piecewise[{{-1, x < 1}, {0, 1 <= x < 2}, {1, x >= 2}}] Plot[f[x], {x, 0, 3}, PlotStyle -> {Thickness[0.01], Green}] Plot[f[x], {x, 0, 3}, PlotStyle -> {Thickness[0.01], Orange}] ... in both cases, actually, with additional option ImageSize->8*72 so that I could better see the effect. And yes, the x-axis and tick marks do show through the green or orange segment of the function's graph. But this looks perfectly attractive and informative to me: I would not want to have the axis or the tick marks obscured. If I were to insist on obscuring the axes and tick marks, I would simply choose a very intense, dark color such as Blue. I don't know how one would determine whether the axes are drawn last, since if you take the FullForm of the plot, the axes are represented merely by an expression Rule[Axes,True]. AES wrote: > I'm Plot[]ing two functions, using > > PlotStyle->{{Thick, Blue}, {Thick, Orange}] > > Both functions run along on top of the x axis (i.e., have y(x)=0) for > part of their range. > > In these regions, the black axis line shows through -- or on top of? -- > both curves. The Blue curve is dark enough that you don't notice this; > but with the Orange curve -- or maybe a Green one -- it looks terrible. > > Are the axes drawn before or after the curves? (I can see arguments > both ways on which of these ought to be the default.) > > Or are the Colors in the PlotStyle translucent? > > Any simple way to switch this behavior? > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**References**:**Is Orange translucent?***From:*AES <siegman@stanford.edu>