0
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xzak = {-10, 10};
yzak = {-10, 10};
fun := x^2 + y^2;        
wykres = Plot3D[
       fun, {x, xzak[[1]], xzak[[2]]}, {y, yzak[[1]], yzak[[2]]}, 
       ColorFunction -> Function[{x, y, z}, Hue[z]]];
    Graphics3D[
     {
      wykres[[1]],
      Point[{{1, 1, 1}}, Scaled[{2, 2, 2}]]
      }
     ]

Ok guys I have a problem I'd like to Plot3D function fun and then plot a scaled Point in same Graphic. I'd like to make point bigger and could clearly see it.

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  • 4
    $\begingroup$ Point[{{1, 1, 1}, Scaled[{2, 2, 2}]}] -- note where the {} go.... Next, perhaps BoxRatios and PointSize would be helpful. Also, I would probably use Show to combine the graphics, instead of extracting them from wkres. $\endgroup$ – Michael E2 Jan 13 '15 at 12:33
1
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With some bells and whistles:

Manipulate[
 fun := x^2 + y^2;
 Show[
  Plot3D[fun,
   {x, -rng, rng},
   {y, -rng, rng},
   ColorFunction ->
    Function[{x, y, z}, Hue[z]],
   PlotStyle -> Opacity[opac]],
  Graphics3D[
   {Blue,
    AbsolutePointSize[pt],
    Point[{1, 1, 1}]}]],
 {{rng, 2, "x & y Range"}, 1.5, 10,
  Appearance -> "Labeled"},
 Row[{
   Control[
    {{opac, .75, "Opacity"}, Range[.5, 1, .05]}],
   Spacer[25],
   Control[
    {{pt, 5, "Point Size"}, Range[2, 15]}]}]]

enter image description here

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