/demo/volume-line-qa). These are the production LiveChart components.
- Spike price + volume pushes the price axis outward and raises the live volume to 6,000, shrinking the other bars relative to it.
- Pause feed, then Edit history in place. Alternating edits raise and lower existing historical volumes without appending candles. The bars must rescale even though the candle count stays the same.
- Resume feed, switch rounding and time window, then switch smooth/linear curves and add a gap. Line and fill must follow the same shape.
- Empty data, then Restore data, to catch stale paths and stale maxima.
- Drag the plot to scroll into history, pinch to zoom, and hold to scrub. The chart labels show whether the viewport is following live data or history and show its visible duration.