4d plot and coordinate values

Hi, Could any one help me in solving my issues. Here is my problem: Issue1: I want to define grid x,y z values for example say x=1:1:5; y=1:1:10;z=1:1:6; from this i want the combination of all the coordinate points say Combpoints=[1 1 1;1 1 2;1 1 3;..........5 10 6] Issue2: Now for suppose i have all the combination of coordinate points say Combpoints is a (m*3) where rows reperesents no. of points and column represents x,y z locations. Along with that i have another matrix say power(m*1). which is scalar values Now i want to plot in 4d i.e x y z coordinates and power with color bar. for suppose say power matrix is with minimum 0 to maximun 4 randomly, now i need a clor bar in such a way that minimum with blue and maximum with red. Thanks and sorry for inconvenience, waiting for ur positive reply, sincierly kumar