mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-24 00:47:57 -05:00
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/*
|
|
MDAL - Mesh Data Abstraction Library (MIT License)
|
|
Copyright (C) 2018 Peter Petrik (zilolv at gmail dot com)
|
|
*/
|
|
|
|
#include "mdal_gdal_netcdf.hpp"
|
|
#include "mdal_utils.hpp"
|
|
|
|
MDAL::DriverGdalNetCDF::DriverGdalNetCDF()
|
|
: MDAL::DriverGdal(
|
|
"NETCDF",
|
|
"GDAL NetCDF",
|
|
"*.nc"
|
|
, "GRIB" )
|
|
{
|
|
}
|
|
|
|
MDAL::DriverGdalNetCDF *MDAL::DriverGdalNetCDF::create()
|
|
{
|
|
return new DriverGdalNetCDF();
|
|
}
|
|
|
|
std::string MDAL::DriverGdalNetCDF::GDALFileName( const std::string &fileName )
|
|
{
|
|
#ifdef WIN32
|
|
// Force usage of the predefined GDAL driver
|
|
// http://gis.stackexchange.com/a/179167
|
|
// on Windows, HDF5 driver is checked before NETCDF driver in GDAL
|
|
return "NETCDF:\"" + fileName + "\"";
|
|
#else
|
|
return fileName;
|
|
#endif
|
|
}
|
|
|
|
bool MDAL::DriverGdalNetCDF::parseBandInfo( const MDAL::GdalDataset *cfGDALDataset, const MDAL::DriverGdal::metadata_hash &metadata, std::string &band_name, RelativeTimestamp *time, bool *is_vector, bool *is_x )
|
|
{
|
|
MDAL_UNUSED( cfGDALDataset );
|
|
|
|
metadata_hash::const_iterator iter;
|
|
|
|
iter = metadata.find( "netcdf_dim_time" );
|
|
|
|
if ( iter == metadata.end() )
|
|
*time = MDAL::RelativeTimestamp();
|
|
else
|
|
*time = MDAL::RelativeTimestamp( parseMetadataTime( iter->second ), mTimeUnit );
|
|
|
|
// NAME
|
|
iter = metadata.find( "long_name" );
|
|
if ( iter == metadata.end() )
|
|
{
|
|
iter = metadata.find( "netcdf_varname" );
|
|
if ( iter == metadata.end() ) return true; //FAILURE, should be always present
|
|
band_name = iter->second;
|
|
}
|
|
else
|
|
{
|
|
band_name = iter->second;
|
|
}
|
|
|
|
// Loop throught all additional dimensions but time
|
|
for ( iter = metadata.begin(); iter != metadata.end(); ++iter )
|
|
{
|
|
std::string key = iter->first;
|
|
if ( MDAL::contains( key, "netcdf_dim_" ) )
|
|
{
|
|
key = MDAL::replace( key, "netcdf_dim_", "" );
|
|
if ( key != "time" )
|
|
{
|
|
band_name += "_" + key + ":" + iter->second;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Parse X, Y components if present
|
|
parseBandIsVector( band_name, is_vector, is_x );
|
|
|
|
return false; // SUCCESS
|
|
}
|
|
|
|
void MDAL::DriverGdalNetCDF::parseGlobals( const MDAL::DriverGdal::metadata_hash &metadata )
|
|
{
|
|
metadata_hash::const_iterator iterTimeUnit = metadata.find( "time#units" );
|
|
metadata_hash::const_iterator iterCalendar = metadata.find( "time#calendar" );
|
|
std::string calendar;
|
|
if ( iterCalendar != metadata.end() )
|
|
calendar = iterCalendar->second;
|
|
|
|
if ( iterTimeUnit != metadata.end() )
|
|
{
|
|
std::string units = iterTimeUnit->second;
|
|
mTimeUnit = MDAL::parseCFTimeUnit( units );
|
|
if ( !mRefTime.isValid() )
|
|
mRefTime = MDAL::parseCFReferenceTime( units, calendar );
|
|
}
|
|
}
|
|
|
|
MDAL::DateTime MDAL::DriverGdalNetCDF::referenceTime() const {return mRefTime;}
|