Re-generating data for Charts

[Gervase Markham]

Andreas Höfler wrote:

> can I somehow regenerate chart-data for Bugzilla 2.17.4, if the chart-data
> is incorrect or got corrupted?

For old charts, yes. Run:
collectstats.pl --regenerate

This feature is not available for new charts, because regenerating the 
values of arbitrarily complex searches at arbitrary points in history is 
Very Hard Indeed. MattyT thinks it can be done, so I've passed the 
problem over to him ;-) But I have no plans to implement it.

Gerv