65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
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# %%
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# download src_ref_files from Zenodo
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import os
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import numpy as np
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import sys
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try:
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from pytomoatt.model import ATTModel
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from pytomoatt.checkerboard import Checker
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from pytomoatt.src_rec import SrcRec
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except:
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print("ERROR: ATTModel not found. Please install pytomoatt first."
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"See https://tomoatt.github.io/PyTomoATT/installation.html for details.")
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sys.exit(1)
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class BuildInitialModel():
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def __init__(self, par_file="./3_input_params/input_params_signal.yaml", output_dir="2_models"):
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"""
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Build initial model for tomography inversion
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"""
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self.am = ATTModel(par_file)
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self.output_dir = output_dir
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def build_initial_model(self, vel_min=5.0, vel_max=8.0):
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"""
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Build initial model for tomography inversion
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"""
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self.am.vel[self.am.depths < 0, :, :] = vel_min
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idx = np.where((0 <= self.am.depths) & (self.am.depths < 40.0))[0]
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self.am.vel[idx, :, :] = np.linspace(vel_min, vel_max, idx.size)[::-1][:, np.newaxis, np.newaxis]
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self.am.vel[self.am.depths >= 40.0, :, :] = vel_max
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def build_ckb_model(self):
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"""
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Build checkerboard model for tomography inversion
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"""
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nr = self.am.n_rtp[0]
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for ir in range(nr):
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dep = self.am.depths[ir]
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self.am.vel[ir, :, :] = (1 + 0.05 * np.sin(np.pi * dep / 10.0)) * self.am.vel[ir, :, :]
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if __name__ == "__main__":
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# download src_rec_config.dat
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url = 'https://zenodo.org/records/14053821/files/src_rec_config.dat'
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path = "1_src_rec_files/src_rec_config.dat"
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os.makedirs(os.path.dirname(path), exist_ok=True)
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if not os.path.exists(path):
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sr = SrcRec.read(url)
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sr.write(path)
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# build initial model
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output_dir = "2_models"
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os.makedirs(output_dir, exist_ok=True)
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bim = BuildInitialModel(output_dir=output_dir)
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bim.build_initial_model()
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bim.am.write('{}/model_init_N{:d}_{:d}_{:d}.h5'.format(bim.output_dir, *bim.am.n_rtp))
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bim.build_ckb_model()
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bim.am.write('{}/model_ckb_N{:d}_{:d}_{:d}.h5'.format(bim.output_dir, *bim.am.n_rtp))
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