I'm afraid this is a huge shortcoming in your software (especially for the price) and will probably prevent us from using it. The whole point of the zoom line chart is to display a large number of data points and show the trend lines from a macroscopic view. Without being able to see the peaks and valleys, the chart is USELESS.
On our chart, the y-axis value (set automatically) goes up to 60,000, but none of the points in the macro view are even close to that value. If I zoom in and scroll around enough I can eventually find that data point, but again the chart is useless at that point.
An option to turn on some sort of basic aggregation would be most welcome. A couple of extra attributes in the XML could be used to pass in parameters i.e. -
aggregationType = average, maximum, minimum, median, none, etc (sets the type of aggregate function to use)
aggregationDataType = int, currency, datetime etc (tells Fusiocharts what type of data it is so that it can better guess at how best to aggregate it)
aggregateGroupSize = 10, 20, etc (sets how many points will be grouped in an aggregate function and displayed as a single point)
With those 3 parameters (or something similar) it should be possible to offer some kind of aggregation feature. It doesn't have to suit every situation, but giving us tweakable parameters to experiment with makes it more adaptable to different scenarios. Saying that aggregation is contextual feels like a cop out to me.
