1. How empty space around the chart can be removed?
You can try to set the horizontal axis PlotMode property to OnTicks.
2. Want to have only one scroll-bar for all horizontal Axis.
As demonstrated in the "Smooth Scrolling" example - you need a view model and all charts' Zoom and PanOffset properties should be bound to that view model's corresponding properties. As in the example, you can enable one of the chart views pan and zoom behavior. This way Zoom and PanOffset will be calculated automatically. If you do not wish to use a central chart view - you can add a RadSlider with property IsSelectionRangeEnabled set to true, and calculate the Zoom and PanOffset manually.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>