eccodes/definitions/grib2/template.5.1.def

# (C) Copyright 2005- ECMWF.

# TEMPLATE 5.1, Matrix values at grid point - simple packing
# Preliminary note:
# This template was not validated at the time of publication and should be used with caution

include "grib2/template.5.packing.def"

unsigned[1] matrixBitmapsPresent;
# same as in edition 1
alias secondaryBitmapPresent=matrixBitmapsPresent;

# Number of data values encoded in Section 7
unsigned[4] numberOfCodedValues;

# NR - first dimension (rows)
unsigned[2] firstDimension;

alias NR = firstDimension;
# NC - second dimension (columns)
unsigned[2] secondDimension;

alias NC = secondDimension;
# First dimension coordinate value definition (Code Table 5.2)
unsigned[1] firstDimensionCoordinateValueDefinition;

# NC1 - number of coefficients or values used to specify first dimension coordinate function
unsigned[1] NC1 : dump ;
alias numberOfCoefficientsOrValuesUsedToSpecifyFirstDimensionCoordinateFunction=NC1;

# Second dimension coordinate value definition (Code Table 5.2)
unsigned[1] secondDimensionCoordinateValueDefinition ;

# NC2 - number of coefficients or values used to specify second dimension coordinate function
unsigned[1] NC2 : dump ;
alias numberOfCoefficientsOrValuesUsedToSpecifySecondDimensionCoordinateFunction = NC2;

# First dimension physical significance (Code Table 5.3)
unsigned[1] firstDimensionPhysicalSignificance ;

# Second dimension physical significance (Code Table 5.3)
unsigned[1] secondDimensionPhysicalSignificance ;

ieeefloat coefsFirst[NC1]; # TODO: find proper names
ieeefloat coefsSecond[NC2]; # TODO: find proper names

alias data.coefsFirst = coefsFirst;
alias data.coefsSecond=coefsSecond;

if (matrixBitmapsPresent == 1) {
  constant datumSize             = NC*NR;
  constant secondaryBitmapsCount = numberOfValues + 0;
  constant secondaryBitmapsSize  = secondaryBitmapsCount/8;

  transient numberOfDataMatrices = numberOfDataPoints/datumSize;

  position offsetBBitmap;
  meta secondaryBitmaps g2bitmap(
          dummy,
          missingValue,
          offsetBSection5,
          section5Length,
          numberOfCodedValues ,
          dummy) : read_only;

  meta bitmap data_g2secondary_bitmap(primaryBitmap,
      secondaryBitmaps,
      missingValue,datumSize,numberOfDataPoints) : read_only;
}