If you weren't able to attend the RHQ Charting meeting here is a Youtube recording:

https://www.youtube.com/watch?feature=player_embedded&v=iFfh7DhCFv0


From the last meeting here are the charting issues addressed:

1) Trendlines - being able to visualize the trendiness of the data and not get lost in the noise
2) Identification of individual values (through a heavy visual cap on bar top) as opposed to the stacked bar aggregations
3) Eliminating gradients that alluded to data changing within the bar in a certain direction
4) Simplified x-axis with more human readable times displayed on logical boundaries such as every 15 min, 1 hour instead of every 10th bar showings its exact time
4) Hovers to provide detailed insight into each bar with explicit values showing (and durations of bars: 20 minutes bars)
5) More exact availability intervals and hovers that provide availability start and end period times along with duration calculations. This anwsers questions such as "When was my down time period exactly?" The duration information provides quick answers to questions like "Oh we were down for 50 minutes." instead of having to look at the availability stoplights and calculate the interval (which would only be as granular as the bar duration shown).
6) Out-of-Bounds charting (when baselines are available)
7) Performance++: with the addition of availability data and Out-Of-Bounds data along with the metric data performance issues were beginning to show up. By using parallel requests we are now able to incur no additional time to the metrics query and reap the benefits of the additional data (avail + OOB). This also opens the door to augmenting the charts with additional data in the future without much of a performance hit.



-- Mike