Last updated: January 2013
The following table lists the GRIB2 meta data and associated grib_api keys for the Data Representation Section of GRIB2 messages.
Octets | Key Name | Comments | ||||||||||||||||||||||||||||||||||||||
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1-4 | section5Length | Length of section in octets (nn) | ||||||||||||||||||||||||||||||||||||||
5 | numberOfSection | Number of section (5) | ||||||||||||||||||||||||||||||||||||||
6-9 | numberOfValues | Number of data points where one or more values are specified in Section 7 when a bit map is present, total number of data points when a bit map is absent. | ||||||||||||||||||||||||||||||||||||||
10-11 | dataRepresentationTemplateNumber | Data representation template number according to Code Table 5.0:
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12-nn | Data Representation Template: Only Template 5.0 is shown here | |||||||||||||||||||||||||||||||||||||||
12-15 | referenceValue | Reference value (R) (IEEE 32-bit floating-point value) | ||||||||||||||||||||||||||||||||||||||
16-17 | binaryScaleFactor | Binary scale factor (E) | ||||||||||||||||||||||||||||||||||||||
18-19 | decimalScaleFactor | Decimal scale factor (D) | ||||||||||||||||||||||||||||||||||||||
20 | bitsPerValue | Number of bits used for each packed value for simple packing, or for each group reference value for complex packing or spatial differencing | ||||||||||||||||||||||||||||||||||||||
21 | typeOfOriginalFieldValues | Type of original field values according to Code Table 5.1:
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