91 lines
4.0 KiB
C++
91 lines
4.0 KiB
C++
/********************************************************
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* ██████╗ ██████╗████████╗██╗
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* ██╔════╝ ██╔════╝╚══██╔══╝██║
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* ██║ ███╗██║ ██║ ██║
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* ██║ ██║██║ ██║ ██║
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* ╚██████╔╝╚██████╗ ██║ ███████╗
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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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* Geophysical Computational Tools & Library (GCTL)
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*
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* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
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*
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* GCTL is distributed under a dual licensing scheme. You can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 2
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* of the License, or (at your option) any later version. You should have
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* received a copy of the GNU Lesser General Public License along with this
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* program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If the terms and conditions of the LGPL v.2. would prevent you from using
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* the GCTL, please consider the option to obtain a commercial license for a
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* fee. These licenses are offered by the GCTL's original author. As a rule,
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* licenses are provided "as-is", unlimited in time for a one time fee. Please
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* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
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* to include some description of your company and the realm of its activities.
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* Also add information on how to contact you by electronic and paper mail.
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******************************************************/
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#include "emd.h"
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#ifdef GCTL_EEMD
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void libeemd_err_hander(libeemd_error_code err_code)
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{
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if (err_code != EMD_SUCCESS)
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{
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switch (err_code)
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{
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case EMD_INVALID_ENSEMBLE_SIZE :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Invalid ensemble size (zero or negative)");
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break;
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case EMD_INVALID_NOISE_STRENGTH :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Invalid noise strength (negative)");
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break;
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case EMD_NOISE_ADDED_TO_EMD :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Positive noise strength but ensemble size is one (regular EMD)");
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break;
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case EMD_NO_NOISE_ADDED_TO_EEMD :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Ensemble size is more than one (EEMD) but noise strength is zero");
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break;
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case EMD_NO_CONVERGENCE_POSSIBLE :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Stopping criteria invalid: would never converge");
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break;
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case EMD_NOT_ENOUGH_POINTS_FOR_SPLINE :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Spline evaluation tried with insufficient points");
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break;
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case EMD_INVALID_SPLINE_POINTS :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Spline evaluation points invalid");
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break;
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case EMD_GSL_ERROR :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Error reported by GSL library");
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break;
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default :
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throw std::runtime_error("[GCTL] gathered from [libeemd] Error code with unknown meaning. Please file a bug!");
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}
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}
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return;
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}
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void gctl::eemd1d(const array<double> &in, matrix<double> &out, size_t M,
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unsigned int ensemble_size, double noise_strength, unsigned int S_number,
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unsigned int num_siftings, unsigned long int rng_seed)
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{
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if (M == 0) M = emd_num_imfs(in.size());
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out.resize(M, in.size());
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libeemd_err_hander(eemd(in.get(), in.size(), out.get(), M, ensemble_size, noise_strength, S_number, num_siftings, rng_seed));
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return;
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}
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void gctl::ceemdan1d(const array<double> &in, matrix<double> &out, size_t M,
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unsigned int ensemble_size, double noise_strength, unsigned int S_number,
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unsigned int num_siftings, unsigned long int rng_seed)
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{
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if (M == 0) M = emd_num_imfs(in.size());
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out.resize(M, in.size());
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libeemd_err_hander(ceemdan(in.get(), in.size(), out.get(), M, ensemble_size, noise_strength, S_number, num_siftings, rng_seed));
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return;
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}
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#endif // GCTL_EEMD
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