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https://github.com/f4exb/sdrangel.git
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53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2025 Jon Beniston, M7RCE <jon@beniston.com> //
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// //
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// This program 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 as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program 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 V3 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 this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_WHITTAKEREILERS_H
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#define INCLUDE_WHITTAKEREILERS_H
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#include <QtCore>
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#include "export.h"
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// Whittaker-Eilers smoother
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// https://pubs.acs.org/doi/10.1021/ac034173t
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class SDRBASE_API WhittakerEilers
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{
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public:
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WhittakerEilers();
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~WhittakerEilers();
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void filter(const double *xi, double *yi, const double *w, const int length, const double lambda=2000);
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private:
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void alloc(int length);
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void dealloc();
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double *v1a;
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double *v2a;
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double *da;
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double *dtd;
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double *ca;
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double *za;
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double *zb;
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double *b;
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int m_length;
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};
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#endif /* INCLUDE_WHITTAKEREILERS_H */
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