2
$\begingroup$

I'm trying to apply a ColorFunction[] to a piecewise plot. For some reason, applying the ColorFunction[] to a plot results in aliasing artifacts (as seen in the image). Is there anyway to get rid of this? (Mathematica 11.0)

cf[x_] := If[x <= 0, Black, Blue];
Rasterize[
 Column[{
   Plot[Piecewise[{{x^2, x >= 0}, {0, x < 0}}], {x, -2, 2}, 
    ColorFunction -> cf, ImageSize -> Large],
   Plot[Piecewise[{{x^2, x >= 0}, {0, x < 0}}], {x, -2, 2}, 
    PlotStyle -> Blue, ImageSize -> Large]
   }], ImageSize -> Large]

Color Function Aliasing

$\endgroup$
3
$\begingroup$

You can use MeshShading instead of ColorFunction

Rasterize[
 Column[{Plot[Piecewise[{{x^2, x >= 0}, {0, x < 0}}], {x, -2, 2}, 
    Mesh -> {{0}}, MeshShading -> {Black, Blue}, ImageSize -> Large], 
   Plot[Piecewise[{{x^2, x >= 0}, {0, x < 0}}], {x, -2, 2}, 
    PlotStyle -> Blue, ImageSize -> Large]}], ImageSize -> Large]

Mathematica graphics

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.