title: Plot 3D mesh using 3D numpy array and 2D numpy array
body: <p>I have a 3D numpy array Lattice[][][], and a 2D numpy array Trajectory[][].
  I want the indices i/j/k of Lattice to be the coordinate axes and the value contained in the tensor element to be plotted as a colored dot, making a 3D mesh maybe
  and I want to plot Trajectory where the Trajectory[p][0]/[1]/[2] contains the coordinates, and the index p is the iteration number - so this I want to plot as a 3D line, hopefully inside the mesh. I have no idea from where to start, is it possible in matplotlib?</p>