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sem_funcs.py
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sem_funcs.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Wrappers around some functions from the finite_elem_mapping module from
AxiSEM's kernel module.
:copyright:
Lion Krischer ([email protected]), 2020
:license:
GNU Lesser General Public License, Version 3 [non-commercial/academic use]
(http://www.gnu.org/copyleft/lgpl.html)
: Modified by nqdu on Dec 12th, 2023
"""
from lib import libsem
import numpy as np
def inside_element(s, z, nodes, element_type, tolerance):
nodes = np.require(nodes, requirements=["F_CONTIGUOUS"])
isin,xi,eta = libsem.inside_element_warp(s,z,nodes,element_type,tolerance)
return isin, xi, eta
def lagrange_interpol_2D_td(points1, points2, coefficients, x1, x2): # NOQA
points1 = np.require(
points1, dtype=np.float64, requirements=["F_CONTIGUOUS"]
)
points2 = np.require(
points2, dtype=np.float64, requirements=["F_CONTIGUOUS"]
)
coefficients = np.require(
coefficients, dtype=np.float64, requirements=["F_CONTIGUOUS"]
)
# Should be safe enough. This was never raised while extracting a lot of
# seismograms.
assert len(points1) == len(points2)
out = libsem.lagrange_2D(points1,points2,coefficients,x1,x2)
return out
def strain_td(u, G, GT, xi, eta, npol, nsamp, nodes, element_type, axial,stype="monopole"):
assert(stype in ["monopole","dipole","quadpole"])
u = np.require(u, dtype=np.float64, requirements=["F_CONTIGUOUS"])
G = np.require(G, dtype=np.float64, requirements=["F_CONTIGUOUS"]) # NOQA
GT = np.require(
GT, dtype=np.float64, requirements=["F_CONTIGUOUS"] # NOQA
)
xi = np.require(xi, dtype=np.float64, requirements=["F_CONTIGUOUS"])
eta = np.require(eta, dtype=np.float64, requirements=["F_CONTIGUOUS"])
nodes = np.require(nodes, dtype=np.float64, requirements=["F_CONTIGUOUS"])
strain = libsem.strain_td_warp(u,G,GT,xi,eta,nodes,element_type,axial,stype)
strain = np.reshape(strain,(nsamp, npol + 1, npol + 1, 6),order='F')
return strain