eccodes/definitions/grib1/grid_definition_192.78.def

# (C) Copyright 2005- ECMWF.

# DWD local grid definition 192 - triangular grid base on icosahedron subdivision

constant isGridded = true;

#  n2 - exponent of 2 for the number of intervals on main triangle sides
unsigned[2] n2  : dump ;

#  n3 - exponent of 3 for the number of intervals on main triangle sides
unsigned[2] n3 : dump ;

#  nd - Number of diamonds
unsigned[3] nd : dump ;
alias numberOfDiamonds=nd;
alias Nj=nd;

#  Ni - number of intervals on main triangle sides of the icosahedron
unsigned[3] Ni : dump ;

#  Numbering order of diamonds
flags[1] numberingOrderOfDiamonds 'grib1/grid.192.78.3.9.table';

#  Latitude of the pole point of the icosahedron on the sphere
signed[4] latitudeOfIcosahedronPole  : dump ;

#  Longitude of the pole point of the icosahedron on the sphere
unsigned[4] longitudeOfIcosahedronPole  : dump ;

#  Longitude of the centre line of the first diamond of the icosahedron on the sphere
unsigned[4] longitudeOfFirstDiamondCenterLine  : dump ;

#  Reserved
unsigned[1] reservedOctet;

#  Scanning mode for one diamond
flags[1] scanningModeForOneDiamond 'grib1/grid.192.78.3.10.table';

transient numberOfPoints= nd *(Ni + 1) * (Ni + 1);
alias numberOfDataPoints=numberOfPoints;

meta numberOfValues
number_of_values(
    values,bitsPerValue,numberOfDataPoints,
    bitmapPresent,bitmap,numberOfCodedValues) : dump;