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#include "DataAdapters/ncfilealt.h"
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#include "mdatetime.h"
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#include "simple2ddata.h"
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#include "specfunc.h"
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#include "vartype.h"
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#include <regex.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#if !defined(M__NEMO)
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#define M__NEMO
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using michlib::Ceil;
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using michlib::Floor;
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using michlib::int2;
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using michlib::MDateTime;
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using michlib::NCFileA;
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using michlib::ToGeoDomainNeg;
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class NEMOData
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{
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enum Type
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{
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TYPE_UNKNOWN,
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TYPE_DT,
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TYPE_NRT,
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TYPE_NRT6
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};
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std::vector<NCFileA> nc;
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size_t xb, yb, xe, ye, layer;
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std::vector<real> depths;
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std::vector<MDateTime> times;
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size_t nx;
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Type type = TYPE_UNKNOWN;
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class EnvVar
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{
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MString name, oldvalue;
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bool activated, saved;
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public:
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EnvVar(): activated(false) {}
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~EnvVar() { Deactivate(); }
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void Activate(const MString& var, const MString& val)
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{
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if(activated) Deactivate();
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name = var;
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char* curval = getenv(name.Buf());
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if(nullptr == curval)
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saved = false;
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else
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{
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oldvalue = curval;
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saved = true;
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}
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setenv(name.Buf(), val.Buf(), 1);
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}
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void Deactivate()
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{
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if(!activated) return;
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if(saved)
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setenv(name.Buf(), oldvalue.Buf(), 1);
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else
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unsetenv(name.Buf());
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activated = false;
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}
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};
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EnvVar proxy;
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public:
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using Data = Simple2DData;
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private:
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template<class DataType> Data ReadVarRaw(const NCFileA& f, const MString& name, size_t i, bool nodepth) const
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{
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real unitmul = 1.0;
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DataType fill;
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real offset = 0.0, scale = 1.0;
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{
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auto a_fill = f.A<DataType>(name, "_FillValue");
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auto a_offset = f.A<double>(name, "add_offset");
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auto a_scale = f.A<double>(name, "scale_factor");
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if(!a_fill) return Data();
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fill = a_fill;
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if(a_offset) offset = a_offset;
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if(a_scale) scale = a_scale;
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}
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auto unit = f.A<MString>(name, "units");
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if(unit && unit.Get() == "m s-1") unitmul = 100.0;
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Data data((xb < xe) ? (xe - xb + 1) : (nx + xe - xb + 1), ye - yb + 1, Lonb(), Latb());
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if(xb < xe)
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{
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auto var = nodepth ? f.V<DataType>(name, {"longitude", xb, xe - xb + 1}, {"latitude", yb, ye - yb + 1}, {"time", i, 1})
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: f.V<DataType>(name, {"longitude", xb, xe - xb + 1}, {"latitude", yb, ye - yb + 1}, {"time", i, 1}, {"depth", layer, 1});
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if(!var) return Data();
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if(var.DimLen(0) != data.Nx() || var.DimLen(1) != data.Ny()) return Data();
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for(size_t ix = 0; ix < var.DimLen(0); ix++)
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for(size_t iy = 0; iy < var.DimLen(1); iy++)
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{
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DataType v = var(ix, iy);
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data(ix, iy) = (v == fill) ? Data::Fillval() : ((v * scale + offset) * unitmul);
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}
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}
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else
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{
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auto var1 = nodepth ? f.V<DataType>(name, {"longitude", xb}, {"latitude", yb, ye - yb + 1}, {"time", i, 1})
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: f.V<DataType>(name, {"longitude", xb}, {"latitude", yb, ye - yb + 1}, {"time", i, 1}, {"depth", layer, 1});
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auto var2 = nodepth ? f.V<DataType>(name, {"longitude", 0, xe + 1}, {"latitude", yb, ye - yb + 1}, {"time", i, 1})
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: f.V<DataType>(name, {"longitude", 0, xe + 1}, {"latitude", yb, ye - yb + 1}, {"time", i, 1}, {"depth", layer, 1});
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if(!(var1 && var2)) return Data();
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if((var1.DimLen(0) + var2.DimLen(0)) != data.Nx() || var1.DimLen(1) != data.Ny() || var2.DimLen(1) != data.Ny()) return Data();
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for(size_t ix = 0; ix < var1.DimLen(0); ix++)
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for(size_t iy = 0; iy < var1.DimLen(1); iy++)
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{
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DataType v = var1(ix, iy);
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data(ix, iy) = (v == fill) ? Data::Fillval() : ((v * scale + offset) * unitmul);
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}
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for(size_t ix = 0; ix < var2.DimLen(0); ix++)
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for(size_t iy = 0; iy < var2.DimLen(1); iy++)
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{
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DataType v = var2(ix, iy);
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data(ix + var1.DimLen(0), iy) = (v == fill) ? Data::Fillval() : ((v * scale + offset) * unitmul);
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}
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}
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return data;
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}
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public:
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Data ReadVar(const MString& name, size_t i) const
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{
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if(!isOk()) return Data();
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bool nodepth = false;
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for(const auto& f: nc)
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{
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auto head = f.Header();
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for(const auto& v: head.Variables())
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if(v.Name() == name)
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{
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if(v.Dimensions().size() == 3) nodepth = true;
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if(v.Type().Id() == NC_SHORT) return ReadVarRaw<int2>(f, name, i, nodepth);
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if(v.Type().Id() == NC_FLOAT) return ReadVarRaw<float>(f, name, i, nodepth);
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}
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}
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return Data();
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}
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Data ReadVar(const MString& name, const std::vector<size_t>& tindex) const
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{
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Data out;
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if(tindex.size() == 0 || !isOk()) return out;
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std::vector<size_t> count;
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for(size_t i = 0; i < tindex.size(); i++)
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{
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Data dat = ReadVar(name, tindex[i]);
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if(!dat) return Data();
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out.Add(dat, count);
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}
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out.Div(count);
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return out;
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}
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public:
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NEMOData() = default;
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// TODO: RetVal
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bool Open(const MString& stype, const MString& cred, const MString& proxyurl = "")
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{
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nc.clear();
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if(proxyurl.Exist()) proxy.Activate("all_proxy", proxyurl);
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if(stype == "DT")
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{
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NCFileA newnc;
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newnc.Reset("https://" + cred + "@my.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy_my_0.083_P1D-m");
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if(!newnc) return false;
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nc.push_back(std::move(newnc));
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type = TYPE_DT;
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}
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if(stype == "NRT")
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{
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std::vector<MString> urls{"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-cur_anfc_0.083deg_P1D-m",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-thetao_anfc_0.083deg_P1D-m",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-so_anfc_0.083deg_P1D-m",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy_anfc_0.083deg_P1D-m",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-wcur_anfc_0.083deg_P1D-m"};
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for(const auto& url: urls)
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{
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NCFileA newnc;
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newnc.Reset(url);
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if(!newnc)
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{
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nc.clear();
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return false;
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}
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nc.push_back(std::move(newnc));
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}
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type = TYPE_NRT;
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}
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if(stype == "NRT6")
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{
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std::vector<MString> urls{"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-cur_anfc_0.083deg_PT6H-i",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-thetao_anfc_0.083deg_PT6H-i",
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"https://" + cred + "@nrt.cmems-du.eu/thredds/dodsC/cmems_mod_glo_phy-so_anfc_0.083deg_PT6H-i"};
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for(const auto& url: urls)
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{
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NCFileA newnc;
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newnc.Reset(url);
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if(!newnc)
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{
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nc.clear();
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return false;
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}
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nc.push_back(std::move(newnc));
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}
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type = TYPE_NRT6;
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}
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auto rdepths = nc[0].V<float>("depth");
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if(!rdepths)
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{
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nc.clear();
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return false;
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}
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depths.resize(rdepths.DimLen(0));
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for(size_t i = 0; i < depths.size(); i++) depths[i] = rdepths(i);
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auto timeD = nc[0].V<double>("time");
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auto timeF = nc[0].V<float>("time");
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if(!(timeD || timeF))
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{
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nc.clear();
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return false;
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}
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MDateTime refdate("1950-01-01");
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timeD ? times.resize(timeD.DimLen(0)) : times.resize(timeF.DimLen(0));
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for(size_t i = 0; i < times.size(); i++) times[i] = refdate + static_cast<time_t>(timeD ? timeD(i) : timeF(i)) * 3600;
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return true;
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}
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MString Info() const
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{
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MString d;
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for(size_t i = 0; i < NDepths(); i++) d += MString(" ") + "(" + i + " " + Depth(i) + ")";
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// clang-format off
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return
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"Dataset: " + Title() + "\n" +
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" Begin date: " + Time(0).ToString() + "\n" +
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" End date: " + Time(NTimes()-1).ToString() + "\n" +
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" Time step: " + Timestep() + " seconds\n" +
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" Time moments: " + NTimes() + "\n" +
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" Depths:" + d;
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// clang-format on
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}
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MString Dump() const
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{
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// clang-format off
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return
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"Current settings:\n" + MString() +
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" Longitudes: from " + Lonb() + " (" + xb + ") to "+ Lone() + " (" + xe + ")\n" +
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" Latitudes: from " + Latb() + " (" + yb + ") to "+ Late() + " (" + ye + ")\n" +
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" Depth: layer " + layer + ", depth " + Depth() + " m\n";
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// clang-format on
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}
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bool SetRegion(real lonbin, real lonein, real latb, real late, real depth)
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{
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if(!isOk()) return false;
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real lonb = ToGeoDomainNeg(lonbin), lone = ToGeoDomainNeg(lonein);
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size_t xb_, xe_, yb_, ye_, layer_ = 0;
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yb_ = static_cast<size_t>(Floor((latb + 80.0) * 12.0));
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ye_ = static_cast<size_t>(Ceil((late + 80.0) * 12.0));
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if(ye_ > 2040) ye_ = 2040;
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if(yb_ >= ye_) return false;
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xb_ = static_cast<size_t>(Floor((lonb + 180.0) * 12.0));
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xe_ = static_cast<size_t>(Ceil((lone + 180.0) * 12.0));
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if(xb_ == xe_) return false;
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if(depth < 0.0 || depth > depths.back())
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layer_ = (depth < 0.0) ? 0 : (depths.size() - 1);
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else
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for(size_t i = 0; i < depths.size() - 1; i++)
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{
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if(depth >= depths[i] && depth <= depths[i + 1])
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{
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layer_ = (depth - depths[i] <= depths[i + 1] - depth) ? i : (i + 1);
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break;
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}
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}
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xb = xb_;
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xe = xe_;
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yb = yb_;
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ye = ye_;
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layer = layer_;
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return true;
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}
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real Lonb() const { return isOk() ? (-180.0 + xb / 12.0) : -1000.0; }
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real Lone() const { return isOk() ? (-180.0 + xe / 12.0) : -1000.0; }
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real Latb() const { return isOk() ? (-80.0 + yb / 12.0) : -1000.0; }
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real Late() const { return isOk() ? (-80.0 + ye / 12.0) : -1000.0; }
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size_t Xb() const { return isOk() ? xb : 0; }
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size_t Xe() const { return isOk() ? xe : 0; }
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size_t Yb() const { return isOk() ? yb : 0; }
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size_t Ye() const { return isOk() ? ye : 0; }
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size_t Nx() const { return isOk() ? ((xb < xe) ? (xe - xb + 1) : (nx + xe - xb + 1)) : 0; }
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size_t Ny() const { return isOk() ? (ye - yb + 1) : 0; }
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real Depth(size_t l) const { return isOk() ? depths[l] : -1000.0; }
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real Depth() const { return Depth(layer); }
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size_t Layer() const { return layer; }
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time_t Timestep() const { return isOk() ? (times[1] - times[0]) : 0; }
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MDateTime Time(size_t i) const
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{
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if(!isOk() || i >= times.size()) return MDateTime();
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return times[i];
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}
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bool isOk() const { return nc.size() > 0; }
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explicit operator bool() const { return nc.size() > 0; }
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size_t NDepths() const { return depths.size(); }
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size_t NTimes() const { return times.size(); }
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template<vartype::Vartype vt> Data Read(size_t it) const = delete;
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template<vartype::Vartype vt> Data Read(const std::vector<size_t>& tindex) const = delete;
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MString Title() const
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{
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switch(type)
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{
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case(TYPE_DT): return "NEMO Delayed time, daily mean (DT)";
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case(TYPE_NRT): return "NEMO Near-real time, daily mean (NRT)";
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case(TYPE_NRT6): return "NEMO Near-real time, 6h resolution (NRT6)";
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default: return "No title";
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}
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}
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static real Fillval() { return Data::Fillval(); }
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};
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::U>(size_t it) const { return ReadVar("uo", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::V>(size_t it) const { return ReadVar("vo", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::TEMP>(size_t it) const { return ReadVar("thetao", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::SAL>(size_t it) const { return ReadVar("so", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::MLD>(size_t it) const { return ReadVar("mlotst", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::SSH>(size_t it) const { return ReadVar("zos", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::W>(size_t it) const { return ReadVar("wo", it); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::U>(const std::vector<size_t>& tindex) const { return ReadVar("uo", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::V>(const std::vector<size_t>& tindex) const { return ReadVar("vo", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::TEMP>(const std::vector<size_t>& tindex) const { return ReadVar("thetao", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::SAL>(const std::vector<size_t>& tindex) const { return ReadVar("so", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::MLD>(const std::vector<size_t>& tindex) const { return ReadVar("mlotst", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::SSH>(const std::vector<size_t>& tindex) const { return ReadVar("zos", tindex); }
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template<> inline NEMOData::Data NEMOData::Read<vartype::Vartype::W>(const std::vector<size_t>& tindex) const { return ReadVar("wo", tindex); }
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#endif
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