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/***********************************************/
/**
* @file gnssIonex2GriddedDataTimeSeries.cpp
*
* @brief Converts TEC maps from IGS IONEX file format to GROOPS GriddedDataTimeSeries format.
**
* @author Sebastian Strasser
* @date 2021-09-13
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
Converts TEC maps from IGS \href{https://files.igs.org/pub/data/format/ionex1.pdf}{IONEX file format}
to GROOPS \file{gridded data time series}{griddedDataTimeSeries} format.
Currently only supports 2D TEC maps.
See also \program{GnssGriddedDataTimeSeries2Ionex}, \configClass{IonosphereMap}{gnssParametrizationType:ionosphereMap}.
)";
/***********************************************/
#include "programs/program.h"
#include "base/string.h"
#include "files/fileGriddedDataTimeSeries.h"
/***** CLASS ***********************************/
/** @brief Converts TEC maps from IGS IONEX file format to GROOPS GriddedDataTimeSeries format.
* @ingroup programsGroup */
class GnssIonex2GriddedDataTimeSeries
{
Bool getLine(InFile &file, std::string &line, std::string &label) const;
Bool testLabel(const std::string &labelInLine, const std::string &label, Bool optional=TRUE) const;
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(GnssIonex2GriddedDataTimeSeries, SINGLEPROCESS, "Converts TEC maps from IGS IONEX file format to GROOPS GriddedDataTimeSeries format.", Conversion, Gnss, Grid, TimeSplines)
/***********************************************/
void GnssIonex2GriddedDataTimeSeries::run(Config &config, Parallel::CommunicatorPtr /*comm*/)
{
try
{
FileName fileNameOut;
std::vector<FileName> fileNamesIn;
readConfig(config, "outputfileGriddedDataTimeSeries", fileNameOut, Config::MUSTSET, "", "");
readConfig(config, "inputfileIonex", fileNamesIn, Config::MUSTSET, "", "");
if(isCreateSchema(config)) return;
GriddedData grid;
std::vector<Matrix> data;
std::vector<Time> times;
for(const auto &fileName : fileNamesIn)
{
logStatus<<"read IONEX file <"<<fileName<<">"<<Log::endl;
InFile file(fileName);
file.exceptions(std::ios::badbit|std::ios::failbit);
Double factor = 0.1;
std::vector<Angle> latitudes, longitudes;
Double height = 0;
Double radius = DEFAULT_GRS80_a;
// read header
std::string line, label;
getLine(file, line, label);
testLabel(label, "IONEX VERSION / TYPE", FALSE);
while(getLine(file, line, label))
{
if(testLabel(label, "END OF HEADER"))
break;
else if(testLabel(label, "MAP DIMENSION"))
{
if(String::toInt(line.substr(0,6)) > 2)
throw(Exception("only 2-dimensional maps are supported yet"));
}
else if(testLabel(label, "LAT1 / LAT2 / DLAT"))
{
Double lat1 = String::toDouble(line.substr(2,6));
Double lat2 = String::toDouble(line.substr(8,6));
Double dlat = String::toDouble(line.substr(14,6));
for(Double lat=lat1; (dlat > 0 ? lat<=lat2 : lat>=lat2); lat+=dlat)
latitudes.push_back(Angle(lat*DEG2RAD));
}
else if(testLabel(label, "LON1 / LON2 / DLON"))
{
Double lon1 = String::toDouble(line.substr(2,6));
Double lon2 = String::toDouble(line.substr(8,6));
Double dlon = String::toDouble(line.substr(14,6));
for(Double lon=lon1; (dlon > 0 ? lon<=lon2 : lon>=lon2); lon+=dlon)
longitudes.push_back(Angle(lon*DEG2RAD));
}
else if(testLabel(label, "HGT1 / HGT2 / DHGT"))
{
height = 1e3*String::toDouble(line.substr(2,6));
}
else if(testLabel(label, "BASE RADIUS"))
{
radius = 1e3*String::toDouble(line.substr(2,6));
}
else if(testLabel(label, "EXPONENT"))
{
factor = std::pow(10., String::toInt(line.substr(0,6)));
}
}
if(!grid.points.size())
{
GriddedDataRectangular gridRectangular;
gridRectangular.longitudes = longitudes;
gridRectangular.latitudes = latitudes;
gridRectangular.heights.resize(latitudes.size(), height);
gridRectangular.ellipsoid = Ellipsoid(radius, 0.); // sphere
grid.init(gridRectangular);
}
// read data
while(getLine(file, line, label))
if(testLabel(label, "START OF TEC MAP"))
{
getLine(file, line, label);
testLabel(label, "EPOCH OF CURRENT MAP", FALSE);
Time time = date2time(String::toInt(line.substr(0,6)), String::toInt(line.substr(6,6)), String::toInt(line.substr(12,6)),
String::toInt(line.substr(18,6)), String::toInt(line.substr(24,6)), String::toInt(line.substr(30,6)));
if(times.size() && time < times.back())
{
logWarning<<"skipping epoch "<<time.dateTimeStr()<<" (unsorted)"<<Log::endl;
continue;
}
// replace possible duplicate epoch by newer one (e.g. 00:00 from file 2 instead of 24:00 from file 1)
if(times.size() && time == times.back())
data.pop_back();
else
times.push_back(time);
Vector epochData(latitudes.size()*longitudes.size());
while(getLine(file, line, label))
{
if(testLabel(label, "END OF TEC MAP"))
break;
testLabel(label, "LAT/LON1/LON2/DLON/H", FALSE);
const Angle lat (String::toDouble(line.substr( 2,6))*DEG2RAD);
const Angle lon1(String::toDouble(line.substr( 8,6))*DEG2RAD);
const Angle lon2(String::toDouble(line.substr(14,6))*DEG2RAD);
const Angle dlon(String::toDouble(line.substr(20,6))*DEG2RAD);
const UInt count = static_cast<UInt>(std::round((lon2-lon1)/dlon))+1;
const UInt idxLat = std::distance(latitudes.begin(), std::find(latitudes.begin(), latitudes.end(), lat));
const UInt idxLon = std::distance(longitudes.begin(), std::find(longitudes.begin(), longitudes.end(), lon1));
for(UInt i=0; i<(count+15)/16; i++)
{
getLine(file, line, label);
for(UInt k=0; k<std::min(count-i*16, UInt(16)); k++)
epochData.at(idxLat*longitudes.size() + (idxLon+i*16+k)%longitudes.size()) = factor * String::toDouble(line.substr(k*5,5));
}
}
data.push_back(epochData);
}
}
logStatus<<"write gridded data time series to <"<<fileNameOut<<">"<<Log::endl;
writeFileGriddedDataTimeSeries(fileNameOut, 1, times, grid, data);
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
Bool GnssIonex2GriddedDataTimeSeries::getLine(InFile &file, std::string &line, std::string &label) const
{
try
{
std::getline(file, line);
if(line.size() && line.back() == '\r')
line.pop_back();
if(line.size()<80)
line.resize(80,' ');
label = line.substr(60,20);
return TRUE;
}
catch(...)
{
line.clear();
line.resize(80,' ');
label = line.substr(60,20);
return FALSE;
}
}
/***********************************************/
Bool GnssIonex2GriddedDataTimeSeries::testLabel(const std::string &labelInLine, const std::string &label, Bool optional) const
{
if(labelInLine.find(label)!=std::string::npos)
return TRUE;
if(optional)
return FALSE;
throw(Exception(std::string("In line '")+labelInLine+"' label '"+label+"' expected\n"));
}
/***********************************************/
|
