Using sistats, sitop, and sitimechart

First, let's define some new functions:

• sistats: sistats is the summary indexing version of the stats command, which calculates the aggregate statistics over the dataset
• sitop: This is the summary indexing version of the top command, which returns the most frequent value of a field or a combination of fields
• sitimechart: sitimechart is the summary indexing version of the timechart command, which creates a time series chart visualization with the corresponding table of statistics

So far, we have used the stats command to populate our summary index. While this works very well, the si* variants have a couple of advantages:

• The remaining portion of the query does not have to be rewritten. For instance, stats count still works as if you were counting the raw events.
• The stats functions that require more data than what happened in that slice of time, will still work. For example, if your time slices each represent an hour, it is not possible to calculate the average...