#82 Limit zooming actions

[choi]

1. For example, my XAxis is Date type, and I define the MinorUnit is minute.
   When zooming, the MinorUnit will be second or millisecond. In fact it's meaningless
   Could I limit the MinorUnit always be minute?

2. The Axis values of my data are in a certain range. So I set min and max of scale. It's ok.
   But when zooming, the min and max value of Axis will be changed to out of the range.
   And there's no any data, so I think it's also meaningless.

Could I limit the range of Axis values?

Could I limit the zoom action?

[choi]

I'm using ZoomEvent to limit the actions.
Does anyone have better ideas? Thanks in advance!