GRIB section 3, the bitmap section
An INTEGER array of at least 2 elements.
Element | Contents | ecCodes keys |
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1 | 0 A bitmap is included in the GRIB message. The data array PSEC4 contains a value which serves as a missing data indicator for use at missing data points.
Non-zero The number of a predefined bitmap. The bitmap is not included in the message. The binary data array contains only valid data values; missing points are suppressed. | bitmapPresent |
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2
| The value used at missing data points in an INTEGER data field. This value must be supplied for both encoding and decoding. | missingValue |
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Contents of KSEC3