plotcolor

 PLOTCOLOR linear plot of x versus y using color coding for z 

 CALLS
 plotcolor(x,y,z,minz,maxz,linewidth)

 INPUTS
   x: horizontal variabl [1xN]
   y: vertical variable
   z: color variable
   minz: bottom value of color scale (optional)
   maxz: top    value of color scale (optional)
   linewidth: width of the plot line

 EXAMPLES
   figure(1);
   clf;
   x = linspace(0,10,1000); 
   y = sin(x); 
   z = cos(3*x); 
   plotcolor(x,y,z,-2,2);
   colorbar;