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Specifies an identifier key that can be used with the IDENTIFIER_VALUE to filter messages. The default value is WMO station.
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Please note that WMO station is not a valid ecCodes BUFR key but a compound one used for convenience. It is defined as follows:
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Specifies the number of custom conditions used to filter messages. The default value is 0.
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A custom condition can be used with any BUFR key to filter messages. The example below illustrates how it works:
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Let us suppose E.g. if we have radiosonde data and we want to filter the messages where which have any temperature value above greater 300 K , the (the message contains multiple temperature values). The custom filter would should look like this:
If we would like to find the messages where the first temperature value is above 300 K the rank should be set accordingly:
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CUSTOM_KEY_N
Specify the ecCodes BUFR key used in the given custom condition.
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Specify the operator used in the given custom condition. The possible values are as follows:
| Operator | Types accepted | Remarks |
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| = | numeric, string | also works for lists |
| != | numeric, string | also works for lists |
| <= | numeric | |
| < | numeric | |
| >= | numeric | |
| > | numeric | |
| in range | numeric | the interval is specified as a list. E.g. 1/2 |
| not in range | numeric | the interval is specified as a list. E.g. 1/2 |
CUSTOM_VALUE_N
Specify the operator used in the given custom condition. The possible values are as follows:
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