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Specifies the number of custom conditions for message/subset filtering. The default value is 0, which means no custom condition is defined. In custom condition any BUFR key can be used. The example below illustrates how it works:
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| title | Custom condition example |
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Let us suppose we have radiosonde data and we want to filter the messages/subsets which have any temperature value greater 300 K (these messages contain multiple temperature values). The custom condition to implement it looks like this:
CUSTOM_CONDITION_COUNT: 1
CUSTOM_KEY: airTemperature
CUSTOM_RANK: ANY
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:
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CUSTOM_VALUE: 300
If we would like to find the messages/subsets where the first temperature value is above 300 K the rank should be set accordingly:
CUSTOM_CONDITION_COUNT: 1
CUSTOM_KEY: airTemperature
CUSTOM_RANK: 1
CUSTOM_OPERATOR: >
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CUSTOM_KEY_N
Specify the BUFR key used in the given custom condition.
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