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aemobservations.hpp
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aemobservations.hpp
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//
// AEM Invert : Software for inversion of AEM data using the
// trans-dimensional tree method and forward modelling code
// written by Ross Brodie from Geoscience Australia. See
//
// R Hawkins, R Brodie and M Sambridge, "Bayesian trans-dimensional inversion of
// Airborne Electromagnetic 2D Conductivity profiles", Exploration Geophysics, 2017
// https://doi.org/10.1071/EG16139
//
// Copyright (C) 2014 - 2018 Rhys Hawkins
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
//
#pragma once
#ifndef aemobservations_hpp
#define aemobservations_hpp
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include "aemexception.hpp"
class aemresponse {
public:
typedef enum {
DIRECTION_X = 0,
DIRECTION_Y = 1,
DIRECTION_Z = 2
} direction_t;
aemresponse(direction_t _d = DIRECTION_X) :
d(_d)
{
}
bool write_text(FILE *fp) const
{
fprintf(fp, "%d %d ", (int)d, (int)response.size());
for (auto &r : response) {
fprintf(fp, "%.9g ", r);
}
return true;
}
bool read_text(FILE *fp)
{
int id, nr;
if (fscanf(fp, "%d %d", &id, &nr) != 2) {
return false;
}
if (id < DIRECTION_X || id > DIRECTION_Z) {
return false;
}
d = (direction_t)id;
for (int i = 0; i < nr; i ++) {
double r;
if (fscanf(fp, "%lf", &r) != 1) {
fprintf(stderr, "aempoint::read_txt: failed to read value\n");
return false;
}
response.push_back(r);
}
return true;
}
direction_t d;
std::vector<double> response;
};
class aempoint {
public:
aempoint() :
tx_height(0.0),
tx_roll(0.0),
tx_pitch(0.0),
tx_yaw(0.0),
txrx_dx(0.0),
txrx_dy(0.0),
txrx_dz(0.0),
rx_roll(0.0),
rx_pitch(0.0),
rx_yaw(0.0)
{
reset();
cached_residual = -1.0;
}
aempoint(double height,
double roll,
double pitch,
double yaw,
double dx,
double dy,
double dz,
double rxroll,
double rxpitch,
double rxyaw) :
tx_height(height),
tx_roll(roll),
tx_pitch(pitch),
tx_yaw(yaw),
txrx_dx(dx),
txrx_dy(dy),
txrx_dz(dz),
rx_roll(rxroll),
rx_pitch(rxpitch),
rx_yaw(rxyaw)
{
cached_residual = -1.0;
}
void reset()
{
responses.clear();
}
bool write_text(FILE *fp) const
{
fprintf(fp,
"%15.9f "
"%15.9f %15.9f %15.9f "
"%15.9f %15.9f %15.9f "
"%15.9f %15.9f %15.9f "
"%d ",
tx_height,
tx_roll,
tx_pitch,
tx_yaw,
txrx_dx,
txrx_dy,
txrx_dz,
rx_roll,
rx_pitch,
rx_yaw,
(int)responses.size());
for (auto &r : responses) {
if (!r.write_text(fp)) {
return false;
}
}
fprintf(fp, "\n");
return true;
}
bool read_text(FILE *fp)
{
int nresponse;
if (fscanf(fp,
"%lf "
"%lf %lf %lf "
"%lf %lf %lf "
"%lf %lf %lf "
"%d ",
&tx_height,
&tx_roll, &tx_pitch, &tx_yaw,
&txrx_dx, &txrx_dy, &txrx_dz,
&rx_roll, &rx_pitch, &rx_yaw,
&nresponse) != 11) {
return false;
}
for (int i = 0; i < nresponse; i ++) {
aemresponse r;
if (!r.read_text(fp)) {
return false;
}
responses.push_back(r);
}
return true;
}
double tx_height;
double tx_roll;
double tx_pitch;
double tx_yaw;
double txrx_dx;
double txrx_dy;
double txrx_dz;
double rx_roll;
double rx_pitch;
double rx_yaw;
std::vector<aemresponse> responses;
double cached_residual;
};
class aemobservations {
public:
aemobservations()
{
}
aemobservations(const char *filename)
{
FILE *fp = fopen(filename, "r");
if (fp == NULL) {
throw AEMEXCEPTION("Failed to open %s for reading\n", filename);
}
while (true) {
aempoint p;
if (!p.read_text(fp)) {
if (feof(fp)) {
break;
} else {
throw AEMEXCEPTION("Failed to read line from file\n");
}
}
points.push_back(p);
}
}
bool save(const char *filename) const
{
FILE *fp = fopen(filename, "w");
if (fp == NULL) {
return false;
}
for (auto &a : points) {
if (!a.write_text(fp)) {
return false;
}
}
fclose(fp);
return true;
}
int total_response_datapoints()
{
int c = 0;
for (auto &p : points) {
for (auto &r : p.responses) {
c += r.response.size();
}
}
return c;
}
std::vector<aempoint> points;
};
#endif // aemobservations_hpp