Hi Anoop, you can do this
h = scatter3(CG,Index,Weight);
First you will need to make sure your Weight and CG are of the same dimensions. One is 1x19 and the other is 1x27 of which you cannot calculate index from. Once you do that, from there you can look at all the scatter3 plot options to change the graph or you can do this interactively with the figure edit tools.