### externalEventChannelSubsetter

Works on the combination of event and channel.

The jython class defined in class must implement EventChannelSubsetter like this example implementation.

For more information on externals, see the externals documentation

### Example

    <externalEventChannelSubsetter>
        <classname>edu.somewhere.seis.sodExt.subsetter.eventChannel.MyEventChannelSubsetter</classname>
    </externalEventChannelSubsetter>

### This consists of

<externalEventChannelSubsetter>

<classname>Any text</classname>
</externalEventChannelSubsetter>

### Places this can be found

In eventChannel there is a choice between all of the following

- bestChannelAtStation
- eventChannelAND
- eventChannelOR
- eventChannelNOT
- eventChannelScript
- externalEventChannelSubsetter