We have some events that presumably are fairly concentrated around some hours of the day. It doesn't seem like Piwik can show a graph of when an event typically happens within a day. It'd be nice to have, for a selected time period (day, week, month), a graph showing number of events per hourly bucket:

0 **
1 ***
…
17 ********
18 ***********
19 *********
…
23 **

So if user selected a week, the "23" bucket here is all events over that week that happened between 23 and 00.

A business might find it useful for deciding when to employ live chat customer service, or when to say "our processing server is quite busy this time of day, if it's too slow you might want to try again after X o'clock", etc.

(Originally posted at http://forum.piwik.org/read.php?3,122547,122621#msg-122621 )