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Putting Points and Lines into RegionPlot3D

• To: mathgroup at smc.vnet.net
• Subject: [mg122541] Putting Points and Lines into RegionPlot3D
• From: Brentt <brenttnewman at gmail.com>
• Date: Mon, 31 Oct 2011 06:52:34 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hello,


How can one put points and lines into a 3D plot?

Here is my non-working code for having a unit sphere with a line inside of
it going from the origin to 1 on the x-axis.

origin = {0, 0, 0};
pBox = 1.5;
RegionPlot3D[
 x^2 + y^2 + z^2 <= 1, {x, -pBox, pBox}, {y, -pBox, pBox}, {z, -pBox,
  pBox}, PlotStyle -> Directive[Yellow, Opacity[0.2]], Mesh -> None,
 Epilog -> {Line[{origin, {0, 1, 0}}]}]

Epilog seems to expect only 2D graphics object, which makes me think its
not the right option to use. But what option would I use? Is there an
available option? Plot3D has the same problem.