Function grib2Template53

Returns {
    binaryScaleFactor: number;
    decimalScaleFactor: number;
    extraDescriptorOctets: number;
    groupLengthFactor: number;
    groupSplittingMethod: { code: number; description: string };
    groupWidthsBits: number;
    missingValueManagement: { code: number; description: string };
    nBitsGroupLength: number;
    numberOfBits: number;
    numberOfGroups: number;
    orderOfSpatialDifference: { code: number; description: string };
    originalType: { code: number; description: string };
    primaryMissingValueSubstitute: number;
    referenceForGroupLengths: number;
    referenceForGroupWidths: number;
    referenceValue: number;
    secondaryMissingValueSubstitute: number;
    trueLengthOfLastGroup: number;
}

Object containing the fields of Template 5.3

• binaryScaleFactor: number

  Binary scale factor (E). Octets 16–17.

• decimalScaleFactor: number

  Decimal scale factor (D). Octets 18–19.

• extraDescriptorOctets: number

  Number of extra descriptor octets needed for spatial differencing (octets 6–ww in data template 7.3). Octet 49.

• groupLengthFactor: number

  Length increment for group lengths. Octet 42. Used in the formula: Lₙ = ref + Kₙ × len_inc.

• groupSplittingMethod: { code: number; description: string }

  Group splitting method used. See Code Table 5.4. Octet 22.

• groupWidthsBits: number

  Number of bits used for the group widths (after subtracting the reference value). Octet 37.

• missingValueManagement: { code: number; description: string }

  Missing value management. See Code Table 5.5. Octet 23.

• nBitsGroupLength: number

  Number of bits used for scaled group lengths (after subtracting ref and dividing by the length increment). Octet 47.

• numberOfBits: number

  Number of bits per packed value for simple packing, or per group reference for complex packing. Octet 20 in the documentation.

• numberOfGroups: number

  Number of groups of data values (NG). Octets 32–35.

• orderOfSpatialDifference: { code: number; description: string }

  Order of spatial difference. See Code Table 5.6. Octet 48.

• originalType: { code: number; description: string }

  Type of original field values. See Code Table 5.1. Octet 21.

• primaryMissingValueSubstitute: number

  Primary missing value substitute. Octets 24–27.

• referenceForGroupLengths: number

  Reference for group lengths. Octets 38–41. The group length (L) is the number of values in a group.

• referenceForGroupWidths: number

  Reference for group widths. Octet 36. The group width is the number of bits used for every value in a group.

• referenceValue: number

  Reference value (R) (IEEE 32-bit floating-point). Octets 12–15 in the GRIB2 documentation.

• secondaryMissingValueSubstitute: number

  Secondary missing value substitute. Octets 28–31.

• trueLengthOfLastGroup: number

  True length of the last group. Octets 43–46. A special-case group length if the sequence doesn’t fit the formula.