你已经派生过 gprMax
镜像自地址
https://gitee.com/sunhf/gprMax.git
已同步 2025-08-06 12:36:51 +08:00
64 行
2.4 KiB
Python
64 行
2.4 KiB
Python
# Copyright (C) 2015: The University of Edinburgh
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# Authors: Craig Warren and Antonis Giannopoulos
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#
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# This file is part of gprMax.
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#
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# gprMax is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# gprMax is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with gprMax. If not, see <http://www.gnu.org/licenses/>.
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import os, argparse
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import h5py
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import numpy as np
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import matplotlib.pyplot as plt
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from gprMax.exceptions import CmdInputError
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"""Plots a B-scan image."""
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# Fields that can be plotted
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fieldslist = ['Ex', 'Hx', 'Ey', 'Hy', 'Ez', 'Hz']
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# Parse command line arguments
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parser = argparse.ArgumentParser(description='Plots B-scan.', usage='cd gprMax; python -m tools.plot_Bscan outputfile --field fieldcomponent')
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parser.add_argument('outputfile', help='name of output file including path')
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parser.add_argument('--field', help='name of field to be plotted, i.e. Ex Ey Ez')
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args = parser.parse_args()
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# Check for valid field name
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if args.field not in fieldslist:
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raise CmdInputError('{} not allowed. Options are: Ex Ey Ez Hx Hy Hz'.format(args.field))
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# Open output file and read some attributes
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f = h5py.File(args.outputfile, 'r')
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path = '/rxs/rx1'
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data = f[path + '/' + args.field]
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# Check that there is more than one A-scan present
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if data.shape[1] == 1:
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raise CmdInputError('{} contains only a single A-scan.'.format(args.outputfile))
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# Plot B-scan image
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fig = plt.figure(num=args.outputfile, figsize=(20, 10), facecolor='w', edgecolor='w')
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plt.imshow(data, extent=[0, data.shape[1], data.shape[0]*f.attrs['dt']*1e9, 0], interpolation='nearest', aspect='auto', cmap='seismic', vmin=-np.amax(np.abs(data)), vmax=np.amax(np.abs(data)))
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plt.xlabel('Trace number')
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plt.ylabel('Time [ns]')
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plt.grid()
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cb = plt.colorbar()
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if 'E' in args.field:
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cb.set_label('Field strength [V/m]')
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elif 'H' in args.field:
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cb.set_label('Field strength [A/m]')
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plt.show()
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#fig.savefig(os.path.splitext(os.path.abspath(file))[0] + '.pdf', dpi=None, format='pdf', bbox_inches='tight', pad_inches=0.1)
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f.close()
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