First commit

tests/test_compare_experimental.py

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+import sys, os
+import h5py
+import numpy as np
+import matplotlib as mpl
+import matplotlib.pyplot as plt
+
+"""Compare field outputs
+    
+Usage:
+    cd gprMax
+    python -m tests.test_compare_experimental path_to_model_output path_to_real_output
+    
+"""
+
+modelfile = sys.argv[1]
+realfile = sys.argv[2]
+path = '/rxs/rx1/'
+# Key refers to subplot location
+fields = {0: 'Ex', 1: 'Ey', 2: 'Ez', 3: 'Hx', 4: 'Hy', 5: 'Hz'}
+plotorder = list(fields.keys())
+
+# Model results
+f = h5py.File(modelfile, 'r')
+floattype = f[path + 'Ex'].dtype
+model = np.zeros((f.attrs['Iterations'], 6), dtype=floattype)
+timemodel = np.zeros((f.attrs['Iterations']), dtype=floattype)
+timemodel = np.arange(0, f.attrs['dt'] * f.attrs['Iterations'], f.attrs['dt']) / 1e-9
+for ID, name in fields.items():
+    model[:,ID] = f[path + str(name)][:] * -1
+    model[:,ID] = model[:,ID] / np.amax(np.abs(model[:,ID]))
+f.close()
+
+# Select model field of interest and find max
+modelmax = np.where(np.abs(model[:,1]) == 1)[0][0]
+
+# Real results
+with open(realfile, 'r') as f:
+    real = np.loadtxt(f)
+real[:,1] = real[:,1] / np.amax(np.abs(real[:,1]))
+realmax = np.where(np.abs(real[:,1]) == 1)[0][0]
+
+difftime = - (timemodel[modelmax] - real[realmax,0])
+
+# Plot modelled and real data
+fig, ax = plt.subplots(num=modelfile + ' versus ' + realfile, figsize=(20, 10), facecolor='w', edgecolor='w')
+ax.plot(timemodel + difftime, model[:,1], 'r', lw=2, label='Model')
+ax.plot(real[:,0], real[:,1], 'r', ls='--', lw=2, label='Experiment')
+ax.set_xlabel('Time [ns]')
+ax.set_ylabel('Amplitude')
+ax.set_xlim([0, timemodel[-1]])
+ax.set_ylim([-1, 1])
+ax.legend()
+[label.set_bbox(dict(facecolor='white', edgecolor='None', alpha=0.65 )) for label in ax.get_xticklabels() + ax.get_yticklabels()]
+ax.grid()
+
+# Show/print plots
+savename = os.path.abspath(os.path.dirname(modelfile)) + os.sep + os.path.splitext(os.path.split(modelfile)[1])[0] + '_vs_' + os.path.splitext(os.path.split(realfile)[1])[0]
+#fig.savefig(savename + '.pdf', dpi=None, format='pdf', bbox_inches='tight', pad_inches=0.1)
+plt.show()