eccodes/definitions/grib2/templates/template.3.100.def

# (C) Copyright 2005- ECMWF.

# TEMPLATE 3.100, Triangular grid based on an icosahedron (see Attachment I.2-GRIB-Att.)
constant isGridded = true;

# Exponent of 2 for the number of intervals on main triangle sides
unsigned[1] n2  : dump ;

# Exponent of 3 for the number of intervals on main triangle sides
unsigned[1] n3  : dump ;

# Number of intervals on main triangle sides of the icosahedron
unsigned[2] Ni  : dump ;

# Number of diamonds
unsigned[1] nd  : dump ;
alias numberOfDiamonds=nd;

# Latitude of the pole point of the icosahedron on the sphere
signed[4] latitudeOfThePolePoint  : dump ;
meta geography.latitudeOfThePolePointInDegrees scale(latitudeOfThePolePoint,one,grib2divider,truncateDegrees) : dump;

# Longitude of the pole point of the icosahedron on the sphere
unsigned[4] longitudeOfThePolePoint  : dump ;
meta geography.longitudeOfThePolePointInDegrees g2lon(longitudeOfThePolePoint);

# Longitude of the centre line of the first diamond of the icosahedron on the sphere
unsigned[4] longitudeOfFirstDiamondCentreLine : dump ;
meta geography.longitudeOfFirstDiamondCentreLineInDegrees g2lon(longitudeOfFirstDiamondCentreLine);

codetable[1] gridPointPosition ('3.8.table',masterDir,localDir);

flags[1] numberingOrderOfDiamonds 'grib2/tables/[tablesVersion]/3.9.table';

flags[1] scanningModeForOneDiamond 'grib2/tables/[tablesVersion]/3.10.table';

unsigned[4] totalNumberOfGridPoints : dump ;
alias nt = totalNumberOfGridPoints;