rm show2d_root.py, no good reason to use ROOT

Examples/Python/utils/show2d_root.py

-#!/usr/bin/env python3
-# Draws two dimensional numpy array using ROOT
-# Usage: python show2d.py file_name
-
-from __future__ import print_function
-import argparse
-import os
-import numpy
-import ROOT
-from pylab import *
-
-
-def PlotNumpyArrayWithROOT(a, zmin=1, zmax=None):
-    nx = a.shape[0]
-    ny = a.shape[1]
-    hist = ROOT.TH2D("hist", "hist", nx, 0, nx, ny, 0, ny)
-    for (x, y), value in numpy.ndenumerate(a):
-        hist.Fill(x, y, value)
-
-    c1 = ROOT.TCanvas("c1", "numpy array", 1024, 768)
-    c1.SetLogz()
-    hist.SetMinimum(zmin)
-    hist.Draw("CONT4Z")
-    c1.Update()
-    ROOT.gApplication.Run()
-    #Interrupt = False
-    #while not Interrupt:
-    #Interrupt = ROOT.gSystem.ProcessEvents()
-    #ROOT.gSystem.Sleep(10)
-
-
-#-------------------------------------------------------------
-# main()
-#-------------------------------------------------------------
-if __name__ == '__main__':
-    # Define the arguments to the script
-    parser = argparse.ArgumentParser(
-        description='Plot 2D data table on log scale.')
-    parser.add_argument('-m',
-                        '--minz',
-                        dest='zmin',
-                        metavar='MINZ',
-                        help='minimum z-value to display [default: 1]',
-                        default='1')
-    parser.add_argument(
-        '-M',
-        '--maxz',
-        dest='zmax',
-        metavar='MAXZ',
-        help='maximum z-value to display [default: maximum value of data set]',
-        default=None)
-    parser.add_argument('filename',
-                        metavar='filename',
-                        help='filename of the data file')
-
-    # Parse the script's arguments
-    args = parser.parse_args()
-    zmin = float(args.zmin)
-    if (args.zmax):
-        zmax = float(args.zmax)
-    else:
-        zmax = None
-    filename = args.filename
-
-    # Load the file's data
-    print("loading...")
-    a = np.loadtxt(filename)
-    file_no_prefix = os.path.splitext(os.path.basename(filename))[0]
-    print('Filename: ', file_no_prefix)
-    print('Data shape: ', a.shape)
-    print('Minimum value of data: ', a.flatten().min())
-    print('Maximum value of data: ', a.flatten().max())
-
-    PlotNumpyArrayWithROOT(a, zmin, zmax)