initial upload

examples/eg3_joint_inversion/prepare_input_files.py

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+# download src_ref_files from Zenodo
+import os
+import numpy as np
+import sys
+try:
+    from pytomoatt.model import ATTModel
+    from pytomoatt.checkerboard import Checker
+    from pytomoatt.src_rec import SrcRec
+except:
+    print("ERROR: ATTModel not found. Please install pytomoatt first."
+          "See https://tomoatt.github.io/PyTomoATT/installation.html for details.")
+    sys.exit(1)
+
+
+class BuildInitialModel():
+    def __init__(self, par_file="./3_input_params/input_params_signal.yaml", output_dir="2_models"):
+        """
+        Build initial model for tomography inversion
+        """
+        self.am = ATTModel(par_file)
+        self.output_dir = output_dir
+
+    def build_initial_model(self, vel_min=5.0, vel_max=8.0):
+        """
+        Build initial model for tomography inversion
+        """
+        self.am.vel[self.am.depths < 0, :, :] = vel_min
+        idx = np.where((0 <= self.am.depths) & (self.am.depths < 40.0))[0]
+        self.am.vel[idx, :, :] = np.linspace(vel_min, vel_max, idx.size)[::-1][:, np.newaxis, np.newaxis]
+        self.am.vel[self.am.depths >= 40.0, :, :] = vel_max
+
+
+def build_ckb_model(output_dir="2_models"):
+    cbk = Checker(f'{output_dir}/model_init_N61_61_61.h5', para_fname="./3_input_params/input_params_signal.yaml")
+    cbk.checkerboard(
+        n_pert_x=2, n_pert_y=2, n_pert_z=2,
+        pert_vel=0.2, pert_ani=0.1, ani_dir=60.0,
+        lim_x=[0.5, 1.5], lim_y=[0.5, 1.5], lim_z=[0, 40]
+    )
+    cbk.write(f'{output_dir}/model_ckb_N61_61_61.h5')
+
+
+if __name__ == "__main__":
+    # download src_rec_config.dat
+    url = 'https://zenodo.org/records/14053821/files/src_rec_config.dat'
+    path = "1_src_rec_files/src_rec_config.dat"
+    os.makedirs(os.path.dirname(path), exist_ok=True)
+    if not os.path.exists(path):
+        sr = SrcRec.read(url)
+        sr.write(path)
+
+    # build initial model
+    output_dir = "2_models"
+    os.makedirs(output_dir, exist_ok=True)
+    bim = BuildInitialModel(output_dir=output_dir)
+    bim.build_initial_model()
+    bim.am.write('{}/model_init_N{:d}_{:d}_{:d}.h5'.format(bim.output_dir, *bim.am.n_rtp))
+
+    # build ckb model
+    build_ckb_model(output_dir)
+
+
+