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dipole1d.cpp
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dipole1d.cpp
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//
// @(#)dipole1d.cpp 1.1 misha1-29sep108
//
// Copyright (c) 2008 of Mikhail Tchernychev
// All rights reserved.
//
// Created: 29sep108 by misha
// Version: 29sep108 by misha
//
#include "dipole1d.h"
#include "math.h"
CMagDipole1D::CMagDipole1D(): CMagObject(0, 3,2, "CMagDipole1D", "dipole1d") {
m_iObjectLinearAbilities = 2;
m_iObjectNonLinearAbilities = 2;
}
CMagDipole1D::~CMagDipole1D() {
}
double CMagDipole1D::ComputeField(FIELDTYPE type, double * add_params, double x_obs, double y_obs, double z_obs,
double x0, double y0, double z0,
double A, double B, double C,
int data_pos) {
double x = (x_obs - (m_lfPos[0]-x0));
double z = (m_lfPos[1]-z0); // here is sign to match gnuplot
//double z = -(m_lfPos[1]-z0);
double R = sqrt(x*x+z*z);
double R5 = R*R*R*R*R;
return (m_lfJ[0]*x*z + m_lfJ[1]*x*x + m_lfJ[2]*z*z) / R5;
}
int CMagDipole1D::GetLinearDerivatives(FIELDTYPE type, double * add_params, double * deriv, int size,
double * pos_deriv,
double x_obs, double y_obs, double z_obs,
double x0, double y0, double z0,
double A, double B, double C,
int data_pos, int * n_params, int * start) {
if(start) *start = m_iLinearStart;
double x = (x_obs - (m_lfPos[0]-x0));
double z = (m_lfPos[1]-z0);
//double z = -(m_lfPos[1]-z0);
double R = sqrt(x*x+z*z);
double R5 = R*R*R*R*R;
deriv[0] = x*z/R5;
deriv[1] = x*x/R5;
deriv[2] = z*z/R5;
*n_params = 3;
return 1;
}
int CMagDipole1D::GetNonLinearDerivatives(FIELDTYPE type, double * add_params, double * deriv, int size,
double * pos_deriv,
double x_obs, double y_obs, double z_obs,
double x0, double y0, double z0,
double A, double B, double C,
int data_pos, int * n_params, int * start) {
if(start) *start = m_iNonLinearStart;
double x = (x_obs - (m_lfPos[0]-x0));
double z = (m_lfPos[1]-z0);
//double z = -(m_lfPos[1]-z0);
double R = sqrt(x*x+z*z);
double R5 = R*R*R*R*R;
double R7 = R5*R*R;
*n_params = 2;
/* for z = -(m_lfPos[1]-z0);
deriv[0] = (5.*x*(z*z*m_lfJ[2]+x*x*m_lfJ[1]+x*z*m_lfJ[0]) / R7 ) +
(-2.*x*m_lfJ[1]-z*m_lfJ[0])/R5;
deriv[1] = -(2.*z*m_lfJ[2]+x*m_lfJ[0])/R5 +
(5.*z*(z*z*m_lfJ[2] + x*x*m_lfJ[1] + x*z*m_lfJ[0])/R7);*/
deriv[0] = (5.*x*(z*z*m_lfJ[2]+x*x*m_lfJ[1]+x*z*m_lfJ[0]) / R7 ) +
(-2.*x*m_lfJ[1]-z*m_lfJ[0])/R5;
deriv[1] = (2.*z*m_lfJ[2]+x*m_lfJ[0])/R5 -
(5.*z*(z*z*m_lfJ[2] + x*x*m_lfJ[1] + x*z*m_lfJ[0])/R7);
return 1;
}
void CMagDipole1D::DumpParameters(FILE * dat) {
CMagObject::DumpParameters(dat);
fprintf(dat,"1D dipole position:\n");
fprintf(dat,"T = (A*(x-x0)*z + B*(x-x0)^2 + C*z^2)/R^5)\n");
if(m_pPosfixed[0])
fprintf(dat," X: %.3lf FIXED\n", m_lfPos[0]);
else
fprintf(dat," X: %.3lf +/- %lg\n", m_lfPos[0], m_lfStdDevPos[0]);
if(m_pPosfixed[1])
fprintf(dat," Z: %.3lf FIXED\n", m_lfPos[1]);
else
fprintf(dat," Z: %.3lf +/- %lg\n", m_lfPos[1], m_lfStdDevPos[1]);
if(m_pJfixed[0])
fprintf(dat," A: %lg FIXED\n", m_lfJ[0]);
else
fprintf(dat," A: %lg +/- %lg\n", m_lfJ[0], m_lfStdDevJ[0]);
if(m_pJfixed[0])
fprintf(dat," B: %lg FIXED\n", m_lfJ[1]);
else
fprintf(dat," B: %lg +/- %lg\n", m_lfJ[1], m_lfStdDevJ[1]);
if(m_pJfixed[0])
fprintf(dat," C: %lg FIXED\n", m_lfJ[2]);
else
fprintf(dat," C: %lg +/- %lg\n", m_lfJ[2], m_lfStdDevJ[2]);
}