Hi guys,
I want to inform you that we have finally decided not to publish the documentation of the ChartRangeFilter as part of this release (version 26).
The process of writing the documentation has revealed previously unknown bugs and API pit-falls.
We believe these make it far less useful in its current state than initially assumed.
We are working on fixing these issues (the good news is they are fairly simple) and will be releasing the ChartRangeFilter as soon as is is ready.
Just a bit more patience please :)
Visigoth