parser=argparse.ArgumentParser(description="Rescales mrc volumes such as masks or references with either with a specified scale factor or between two supplied mrc files.")
# parser.add_argument("-f", "--file", help="create overlay for a single file",
parser.add_argument('-o','--oldMrc',nargs='?',default='.',help='Old tomogram mrc that the MOTLs have been calculated with.')
parser.add_argument('-n','--newMrc',nargs='?',default='.',help='New tomogram mrc file that the MOTLs should be scaled to.')
parser.add_argument('-o','--oldMrc',nargs='?',default='.',help='Old mrc that the volume is matched to.')
parser.add_argument('-n','--newMrc',nargs='?',default='.',help='New mrc file that the MOTLs should be scaled to.')
parser.add_argument('-sf','--scaleFactor',nargs='?',type=float,help='Manual scale factor, default 2 if nothing specified.')
parser.add_argument('-s','--suffix',nargs='?',type=str,default='rescaled',help='Suffix to append to rescaled MOTLs. Default is "rescaled".')
parser.add_argument('-s','--suffix',nargs='?',type=str,default='rescaled',help='Suffix to append to rescaled volume. Default is "rescaled".')