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Specifies the number of custom conditions used to filter messages. The default value is 0. 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 we have radiosonde data and we want to filter the messages which have any temperature value greater 300 K (the message contains these messages contain multiple temperature values). The custom filter 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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CUSTOM_RANK_N
Specify the rank of the BUFR key used in the given custom condition. The default value is ANY, meaning that the rank is not used ignored in the condition,
CUSTOM_OPERATOR_N
Specify the operator used in the given custom condition. The possible values are as follows:
| Operator | Types accepted | Remarks |
|---|---|---|
| = | numeric, string | also works for lists |
| != | numeric, string | also works for lists |
| <= | numeric | |
| < | numeric | |
| >= | numeric | |
| > | numeric | |
| in range | numeric | the |
| range is specified as a list. E.g. 1/2 | ||
| not in range | numeric | the |
| range is specified as a list. E.g. 1/2 |
CUSTOM_VALUE_N
Specify the operator value used in the given custom condition. The possible values are as follows:This option cannot be left empty.
Data extraction
k;k;jk;