applications/staticProps/GofRZ.cpp

/*
 * Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 *
 * SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
 * research, please cite the appropriate papers when you publish your
 * work.  Good starting points are:
 *                                                                      
 * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).             
 * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
 * [4]  Vardeman & Gezelter, in progress (2009).                        
 */

#include <algorithm>
#include <fstream>
#include "applications/staticProps/GofRZ.hpp"
#include "utils/simError.h"

namespace OpenMD {

    GofRZ::GofRZ(SimInfo* info, const std::string& filename, const std::string& sele1, 
                 const std::string& sele2, RealType len, RealType zlen, int nrbins, int nZBins)
        : RadialDistrFunc(info, filename, sele1, sele2), len_(len), zLen_(zlen), nRBins_(nrbins), nZBins_(nZBins){

        setOutputName(getPrefix(filename) + ".gofrz");

        deltaR_ = len_ / (double) nRBins_;
        deltaZ_ = zLen_ / (double)nZBins_;    // for solvated_NVT.md4

        histogram_.resize(nRBins_);
        avgGofr_.resize(nRBins_);
        for (int i = 0 ; i < nRBins_; ++i) {
            histogram_[i].resize(nZBins_);
            avgGofr_[i].resize(nZBins_);
        } 
    }

    void GofRZ::preProcess() {
        for (int i = 0; i < avgGofr_.size(); ++i) {
            std::fill(avgGofr_[i].begin(), avgGofr_[i].end(), 0);
        }
    }

    void GofRZ::initalizeHistogram() {
        npairs_ = 0;
        for (int i = 0; i < histogram_.size(); ++i){
            std::fill(histogram_[i].begin(), histogram_[i].end(), 0);
        }
    }
  
    void GofRZ::processHistogram() {
        int nPairs = getNPairs();
        RealType volume = info_->getSnapshotManager()->getCurrentSnapshot()->getVolume();
        RealType pairDensity = nPairs / volume * 2.0;

        for(int i = 0 ; i < histogram_.size(); ++i){

            RealType rLower = i * deltaR_;
            RealType rUpper = rLower + deltaR_;
            RealType volSlice = NumericConstant::PI * deltaZ_ * (( rUpper * rUpper ) - ( rLower * rLower ));
            RealType nIdeal = volSlice * pairDensity;

            for (int j = 0; j < histogram_[i].size(); ++j){
                avgGofr_[i][j] += histogram_[i][j] / nIdeal;    
            }
        }

    }

    void GofRZ::collectHistogram(StuntDouble* sd1, StuntDouble* sd2) {

        if (sd1 == sd2) {
            return;
        }
        Vector3d pos1 = sd1->getPos();
        Vector3d pos2 = sd2->getPos();
        Vector3d r12 = pos2 - pos1;
        if (usePeriodicBoundaryConditions_)
            currentSnapshot_->wrapVector(r12);

        RealType distance = sqrt(pow(r12.x(), 2) + pow(r12.y(), 2));

        int whichRBin = distance / deltaR_;

        if (distance <= len_) {
     
            RealType Z = fabs(r12.z());

            if (Z <= zLen_) {
                int whichZBin = Z / deltaZ_;

                ++histogram_[whichRBin][whichZBin];        
                ++npairs_;
            }
        }
    }

    void GofRZ::writeRdf() {
        std::ofstream rdfStream(outputFilename_.c_str());
        if (rdfStream.is_open()) {
            rdfStream << "#radial distribution function\n";
            rdfStream << "#selection1: (" << selectionScript1_ << ")\t";
            rdfStream << "selection2: (" << selectionScript2_ << ")\n";
            rdfStream << "#nRBins = " << nRBins_ << "\t maxLen = " << len_ << "deltaR = " << deltaR_ <<"\n";
            rdfStream << "#nZBins =" << nZBins_ << "\t deltaZ = " << deltaZ_ << "\n";
            for (int i = 0; i < avgGofr_.size(); ++i) {
                RealType r = deltaR_ * (i + 0.5);

                for(int j = 0; j < avgGofr_[i].size(); ++j) {
                    RealType z = deltaZ_ * (j + 0.5);
                    rdfStream << avgGofr_[i][j]/nProcessed_ << "\t";
                }

                rdfStream << "\n";
            }
        
        } else {
            sprintf(painCave.errMsg, "GofRZ: unable to open %s\n", outputFilename_.c_str());
            painCave.isFatal = 1;
            simError();  
        }

        rdfStream.close();
    }

}


Revision:	1445
Committed:	Tue Jun 8 20:26:50 2010 UTC (15 years, 4 months ago) by chuckv
File size:	5260 byte(s)
Log Message:	Changes to gofrz so you can specify the z length
#	User	Rev	Content
1	gezelter	1440	/*
2			* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3			*
4			* The University of Notre Dame grants you ("Licensee") a
5			* non-exclusive, royalty free, license to use, modify and
6			* redistribute this software in source and binary code form, provided
7			* that the following conditions are met:
8			*
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			*
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the
15			* distribution.
16			*
17			* This software is provided "AS IS," without a warranty of any
18			* kind. All express or implied conditions, representations and
19			* warranties, including any implied warranty of merchantability,
20			* fitness for a particular purpose or non-infringement, are hereby
21			* excluded. The University of Notre Dame and its licensors shall not
22			* be liable for any damages suffered by licensee as a result of
23			* using, modifying or distributing the software or its
24			* derivatives. In no event will the University of Notre Dame or its
25			* licensors be liable for any lost revenue, profit or data, or for
26			* direct, indirect, special, consequential, incidental or punitive
27			* damages, however caused and regardless of the theory of liability,
28			* arising out of the use of or inability to use software, even if the
29			* University of Notre Dame has been advised of the possibility of
30			* such damages.
31			*
32			* SUPPORT OPEN SCIENCE! If you use OpenMD or its source code in your
33			* research, please cite the appropriate papers when you publish your
34			* work. Good starting points are:
35			*
36			* [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
37			* [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
38			* [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).
39			* [4] Vardeman & Gezelter, in progress (2009).
40			*/
41
42			#include <algorithm>
43			#include <fstream>
44			#include "applications/staticProps/GofRZ.hpp"
45			#include "utils/simError.h"
46
47			namespace OpenMD {
48
49	chuckv	1445	GofRZ::GofRZ(SimInfo* info, const std::string& filename, const std::string& sele1,
50			const std::string& sele2, RealType len, RealType zlen, int nrbins, int nZBins)
51			: RadialDistrFunc(info, filename, sele1, sele2), len_(len), zLen_(zlen), nRBins_(nrbins), nZBins_(nZBins){
52	gezelter	1440
53	chuckv	1445	setOutputName(getPrefix(filename) + ".gofrz");
54	gezelter	1441
55	chuckv	1445	deltaR_ = len_ / (double) nRBins_;
56			deltaZ_ = zLen_ / (double)nZBins_; // for solvated_NVT.md4
57	chuckv	1444
58	chuckv	1445	histogram_.resize(nRBins_);
59			avgGofr_.resize(nRBins_);
60			for (int i = 0 ; i < nRBins_; ++i) {
61			histogram_[i].resize(nZBins_);
62			avgGofr_[i].resize(nZBins_);
63			}
64	gezelter	1440	}
65	chuckv	1445
66			void GofRZ::preProcess() {
67			for (int i = 0; i < avgGofr_.size(); ++i) {
68			std::fill(avgGofr_[i].begin(), avgGofr_[i].end(), 0);
69			}
70	gezelter	1440	}
71
72	chuckv	1445	void GofRZ::initalizeHistogram() {
73			npairs_ = 0;
74			for (int i = 0; i < histogram_.size(); ++i){
75			std::fill(histogram_[i].begin(), histogram_[i].end(), 0);
76			}
77	gezelter	1440	}
78
79	chuckv	1445	void GofRZ::processHistogram() {
80			int nPairs = getNPairs();
81			RealType volume = info_->getSnapshotManager()->getCurrentSnapshot()->getVolume();
82			RealType pairDensity = nPairs / volume * 2.0;
83	gezelter	1440
84	chuckv	1445	for(int i = 0 ; i < histogram_.size(); ++i){
85	gezelter	1440
86	chuckv	1445	RealType rLower = i * deltaR_;
87			RealType rUpper = rLower + deltaR_;
88			RealType volSlice = NumericConstant::PI * deltaZ_ * (( rUpper * rUpper ) - ( rLower * rLower ));
89			RealType nIdeal = volSlice * pairDensity;
90	gezelter	1440
91	chuckv	1445	for (int j = 0; j < histogram_[i].size(); ++j){
92			avgGofr_[i][j] += histogram_[i][j] / nIdeal;
93			}
94			}
95
96	gezelter	1440	}
97
98	chuckv	1445	void GofRZ::collectHistogram(StuntDouble* sd1, StuntDouble* sd2) {
99	gezelter	1440
100	chuckv	1445	if (sd1 == sd2) {
101			return;
102			}
103			Vector3d pos1 = sd1->getPos();
104			Vector3d pos2 = sd2->getPos();
105			Vector3d r12 = pos2 - pos1;
106			if (usePeriodicBoundaryConditions_)
107			currentSnapshot_->wrapVector(r12);
108	gezelter	1440
109	chuckv	1445	RealType distance = sqrt(pow(r12.x(), 2) + pow(r12.y(), 2));
110	gezelter	1440
111	chuckv	1445	int whichRBin = distance / deltaR_;
112	gezelter	1440
113	chuckv	1445	if (distance <= len_) {
114	gezelter	1440
115	chuckv	1445	RealType Z = fabs(r12.z());
116	gezelter	1440
117	chuckv	1445	if (Z <= zLen_) {
118			int whichZBin = Z / deltaZ_;
119	chuckv	1444
120	chuckv	1445	++histogram_[whichRBin][whichZBin];
121			++npairs_;
122			}
123			}
124	gezelter	1440	}
125
126	chuckv	1445	void GofRZ::writeRdf() {
127			std::ofstream rdfStream(outputFilename_.c_str());
128			if (rdfStream.is_open()) {
129			rdfStream << "#radial distribution function\n";
130			rdfStream << "#selection1: (" << selectionScript1_ << ")\t";
131			rdfStream << "selection2: (" << selectionScript2_ << ")\n";
132			rdfStream << "#nRBins = " << nRBins_ << "\t maxLen = " << len_ << "deltaR = " << deltaR_ <<"\n";
133			rdfStream << "#nZBins =" << nZBins_ << "\t deltaZ = " << deltaZ_ << "\n";
134			for (int i = 0; i < avgGofr_.size(); ++i) {
135			RealType r = deltaR_ * (i + 0.5);
136	gezelter	1440
137	chuckv	1445	for(int j = 0; j < avgGofr_[i].size(); ++j) {
138			RealType z = deltaZ_ * (j + 0.5);
139			rdfStream << avgGofr_[i][j]/nProcessed_ << "\t";
140			}
141
142			rdfStream << "\n";
143			}
144
145			} else {
146			sprintf(painCave.errMsg, "GofRZ: unable to open %s\n", outputFilename_.c_str());
147			painCave.isFatal = 1;
148			simError();
149	gezelter	1440	}
150
151	chuckv	1445	rdfStream.close();
152	gezelter	1440	}
153
154			}
155
156
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