


 h = scatter3(s,option) : Plot a 2D/3D object as separate colored points
   @iData/scatter3 function to plot a 2D or 3D object
     2D and 3D objects are shown as separate colored points
     The slice(a) method opens the interactive sliceomatic 3D viewer.
   scatter3(a, 'filled') produces a bubble plot which symbols are coloured and
     proportional in size to intensity. Symbols are filled circles.
   scatter3(a, 'bubble') produces a bubble plot which symbols are coloured and
     proportional in size to intensity. Symbols are empty circles.
 input:  s: object or array (iData)
         option: global option for 2D and 3D plots: 
                 flat, interp, faceted (for shading)
                 transparent, light, clabel, colorbar
                 axis tight, axis auto, view2, view3, hide_axes
                 painters (bitmap drawing), zbuffer (vectorial drawing)
 output: h: graphics object handles (cell)
 ex:     scatter3(iData(peaks)); scatter3(iData(flow));
 Version: Aug. 22, 2017
 See also iData, iData/plot