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/***********************************************/
/**
* @file grace2PotentialCoefficients.cpp
*
* @brief read GRACE data.
*
* @author Torsten Mayer-Guerr
* @date 2005-01-19
*
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
This program converts potential coefficients from the GRACE SDS format
into \file{potential coefficients file}{potentialCoefficients}.
The program supports file formats for RL04 to RL06.
Within the program, the variables \verb|epochStart|, \verb|epochEnd| and \verb|epochMid|
are populated with the corresponding time-stamps in the file.
These can be used in to \configFile{outputfilePotentialCoefficients}{potentialCoefficients}
to auto-generate the file name.
)";
/***********************************************/
#include "programs/program.h"
#include "base/string.h"
#include "inputOutput/file.h"
#include "files/fileSphericalHarmonics.h"
/***** CLASS ***********************************/
/** @brief Read CSR GRACE data.
* @ingroup programsConversionGroup */
class Grace2PotentialCoefficients
{
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(Grace2PotentialCoefficients, SINGLEPROCESS, "read GRACE data", Conversion, Grace, PotentialCoefficients)
/***********************************************/
void Grace2PotentialCoefficients::run(Config &config, Parallel::CommunicatorPtr /*comm*/)
{
try
{
FileName fileNameOut, fileNameIn;
readConfig(config, "outputfilePotentialCoefficients", fileNameOut, Config::MUSTSET, "", "variables: epochStart, epochEnd, epochMid");
readConfig(config, "inputfile", fileNameIn, Config::MUSTSET, "", "");
if(isCreateSchema(config)) return;
logStatus<<"read file <"<<fileNameIn<<">"<<Log::endl;
InFile file(fileNameIn);
Double GM = 0.3986004415e15;
Double R = 0.6378136460e07;
Matrix cnm, snm, sigma2cnm, sigma2snm;
Time timeStart = date2time(9999,1,1), timeEnd;
Bool seekR = FALSE;
Bool seekGM = FALSE;
Bool seekDegree = FALSE;
std::string line;
while(std::getline(file, line))
{
if(line.find("dimension") != std::string::npos)
seekDegree=TRUE;
if( (line.find("degree") != std::string::npos) && seekDegree )
{
auto start_search = line.find(":");
std::stringstream ss(line.substr(start_search+1));
UInt degree = INFINITYDEGREE;
ss>>degree;
cnm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
snm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
sigma2cnm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
sigma2snm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
seekDegree = FALSE;
}
if(line.find("SHM ")==0)
{
UInt degree = String::toInt(line.substr(6, 5));
cnm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
snm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
sigma2cnm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
sigma2snm = Matrix(degree+1, Matrix::TRIANGULAR, Matrix::LOWER);
}
if(line.find("EARTH ")==0)
{
GM = String::toDouble(line.substr(6, 16));
R = String::toDouble(line.substr(23, 16));
}
if(line.find("mean_equator_radius") != std::string::npos)
seekR = TRUE;
if( (line.find("value") != std::string::npos) && seekR )
{
auto start_search = line.find(":");
std::stringstream ss(line.substr(start_search+1));
ss>>R;
seekR = FALSE;
}
if(line.find("earth_gravity_param") != std::string::npos)
seekGM = TRUE;
if( (line.find("value") != std::string::npos) && seekGM )
{
auto start_search = line.find(":");
std::stringstream ss(line.substr(start_search+1));
ss>>GM;
seekGM = FALSE;
}
if((line.find("GRCOEF")==0)||(line.find("GRCOF2")==0))
{
const UInt n = String::toInt(line.substr(6, 5));
const UInt m = String::toInt(line.substr(11, 5));
cnm(n,m) = String::toDouble(line.substr(17, 18));
snm(n,m) = String::toDouble(line.substr(36, 18));
sigma2cnm(n,m) = String::toDouble(line.substr(55, 10));
sigma2snm(n,m) = String::toDouble(line.substr(66, 10));
sigma2cnm(n,m) *= sigma2cnm(n,m);
sigma2snm(n,m) *= sigma2snm(n,m);
const UInt yearStart = String::toInt(line.substr(77, 4));
const UInt monthStart = String::toInt(line.substr(81, 2));
const UInt dayStart = String::toInt(line.substr(83, 2));
timeStart = std::min(timeStart, date2time(yearStart, monthStart, dayStart));
const UInt yearEnd = String::toInt(line.substr(91, 4));
const UInt monthEnd = String::toInt(line.substr(95, 2));
const UInt dayEnd = String::toInt(line.substr(97, 2));
timeEnd = std::max(timeEnd, date2time(yearEnd, monthEnd, dayEnd));
}
}
VariableList fileNameVariableList;
fileNameVariableList.setVariable("epochStart", timeStart.mjd());
fileNameVariableList.setVariable("epochEnd", timeEnd.mjd());
fileNameVariableList.setVariable("epochMid", (0.5*timeStart+0.5*timeEnd).mjd());
logStatus<<"writing potential coefficients to file <"<<fileNameOut(fileNameVariableList)<<">"<<Log::endl;
writeFileSphericalHarmonics(fileNameOut(fileNameVariableList), SphericalHarmonics(GM, R, cnm, snm, sigma2cnm, sigma2snm));
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
|
