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A delayed replication is a way of replicating n times a block of data in a BUFR message by expressing the value of n in the data section itself as opposed to repeating the blocks statically in the definition of the structure. This is possible because the structure of the message is defined in section 3 through the sequence of unexpandedDescriptors while the data themselves are encoded in section 4 (data section) according to the structure defined in section 3. |
Encoding of Delayed Replications
Step-by-step guide
A delayed replication is a way of replicating n times a block of data in a BUFR message by expressing the value of n in the data section itself as opposed to repeating the blocks statically in the definition of the structure. This is possible because the structure of the message is defined in section 3 through the sequence of unexpandedDescriptors while the data themselves are encoded in section 4 (data section) according to the structure defined in section 3. If in the structure definition a delayed replication is included then the value of the replication has to be decoded in the data section and is not known until the decoding of the data section is performed (in ecCodes this is happening when the key "unpack" is set to 1).
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