mgXYZ,X,Y,Z,zSliceIndex,dBMin,titlestr,fontSize) plots the
    image in the 3-D array imgXYZ along the dimensions specified in X,Y,Z,
    where zSliceIndex is the choice of the slices along the Z-dimension
    specified by the user, dBMin is the minimum threshold in terms of dB,
    titlestr is the title of the figure, and fontSize is the font size used
    for the axes and various labels
 
  Copyright (C) 2021 Josiah W. Smith
 
  This program is free software: you can redistribute it and/or modify
  it und