eccodes/definitions/grib2/template.3.grid.def

# (C) Copyright 2005- ECMWF.

constant isGridded = true;

unsigned[4] Ni : can_be_missing,dump;
alias numberOfPointsAlongAParallel=Ni;
alias numberOfPointsAlongXAxis=Ni;
alias Nx = Ni;

unsigned[4] Nj : dump;
alias numberOfPointsAlongAMeridian=Nj;
alias numberOfPointsAlongYAxis= Nj;
alias Ny = Nj;

alias geography.Ni=Ni;
alias geography.Nj=Nj;

# Basic angle of the initial production domain
unsigned[4] basicAngleOfTheInitialProductionDomain = 0;
transient mBasicAngle=basicAngleOfTheInitialProductionDomain*oneMillionConstant;
transient angleMultiplier  = 1;
transient mAngleMultiplier = 1000000;
when (basicAngleOfTheInitialProductionDomain == 0) {
  set angleMultiplier  = 1;
  set mAngleMultiplier = 1000000;
} else {
  set angleMultiplier  = basicAngleOfTheInitialProductionDomain;
  set mAngleMultiplier = mBasicAngle;
}

# Subdivisions of basic angle used to define extreme longitudes and latitudes, and direction increments
unsigned[4] subdivisionsOfBasicAngle = missing() : can_be_missing;

transient angleDivisor = 1000000;
when (missing(subdivisionsOfBasicAngle) || subdivisionsOfBasicAngle == 0) {
  set angleDivisor = 1000000;
} else {
  set angleDivisor = subdivisionsOfBasicAngle;
}

#  La1 - latitude of first grid point
signed[4] latitudeOfFirstGridPoint : edition_specific ;
alias La1 = latitudeOfFirstGridPoint;
#meta latitudeOfFirstGridPointInMicrodegrees times(latitudeOfFirstGridPoint,mAngleMultiplier,angleDivisor) : no_copy;

# Lo1 - longitude of first grid point
signed[4] longitudeOfFirstGridPoint ;
alias Lo1 = longitudeOfFirstGridPoint;

include "grib2/template.3.resolution_flags.def"

# La2 - latitude of last grid point
signed[4] latitudeOfLastGridPoint : edition_specific;
alias La2 = latitudeOfLastGridPoint;

# Lo2 - longitude of last grid point
signed[4] longitudeOfLastGridPoint : edition_specific ;
alias Lo2 = longitudeOfLastGridPoint;