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89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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MDAL - Mesh Data Abstraction Library (MIT License)
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Copyright (C) 2018 Peter Petrik (zilolv at gmail dot com)
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*/
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#include "mdal_gdal_netcdf.hpp"
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#include "mdal_utils.hpp"
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MDAL::DriverGdalNetCDF::DriverGdalNetCDF()
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: MDAL::DriverGdal(
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"NETCDF",
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"GDAL NetCDF",
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"*.nc"
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, "GRIB" )
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, mTimeDiv( 1.0 )
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{
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}
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MDAL::DriverGdalNetCDF *MDAL::DriverGdalNetCDF::create()
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{
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return new DriverGdalNetCDF();
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}
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std::string MDAL::DriverGdalNetCDF::GDALFileName( const std::string &fileName )
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{
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#ifdef WIN32
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// Force usage of the predefined GDAL driver
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// http://gis.stackexchange.com/a/179167
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// on Windows, HDF5 driver is checked before NETCDF driver in GDAL
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return "NETCDF:\"" + fileName + "\"";
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#else
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return fileName;
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#endif
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}
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bool MDAL::DriverGdalNetCDF::parseBandInfo( const MDAL::GdalDataset *cfGDALDataset, const MDAL::DriverGdal::metadata_hash &metadata, std::string &band_name, double *time, bool *is_vector, bool *is_x )
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{
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MDAL_UNUSED( cfGDALDataset );
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metadata_hash::const_iterator iter;
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iter = metadata.find( "netcdf_dim_time" );
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if ( iter == metadata.end() ) return true; //FAILURE, skip no-time bands
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*time = parseMetadataTime( iter->second ) / mTimeDiv;
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// NAME
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iter = metadata.find( "long_name" );
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if ( iter == metadata.end() )
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{
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iter = metadata.find( "netcdf_varname" );
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if ( iter == metadata.end() ) return true; //FAILURE, should be always present
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band_name = iter->second;
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}
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else
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{
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band_name = iter->second;
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}
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// Loop throught all additional dimensions but time
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for ( iter = metadata.begin(); iter != metadata.end(); ++iter )
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{
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std::string key = iter->first;
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if ( MDAL::contains( key, "netcdf_dim_" ) )
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{
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key = MDAL::replace( key, "netcdf_dim_", "" );
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if ( key != "time" )
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{
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band_name += "_" + key + ":" + iter->second;
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}
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}
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}
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// Parse X, Y components if present
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parseBandIsVector( band_name, is_vector, is_x );
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return false; // SUCCESS
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}
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void MDAL::DriverGdalNetCDF::parseGlobals( const MDAL::DriverGdal::metadata_hash &metadata )
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{
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metadata_hash::const_iterator iter = metadata.find( "time#units" );
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if ( iter != metadata.end() )
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{
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std::string units = iter->second;
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mTimeDiv = MDAL::parseTimeUnits( units );
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// TODO store reference time from iter->second too, see crayfish_netcdf.cpp
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}
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}
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