Step bands or Digital bands are created in SciChart.js using the FastBandRenderableSeries. By setting the property IsDigitalLine=true the line is drawn as a step function.
Band series (also known as High-Low fill or Poylgon Fill) can be used to draw thresholds, a fill between two lines or areas of interest on a chart.
If you have data where Y1 is greater than Y2 always, you’ll get an envelope effect. Great for rendering confidence intervals, error margins or Bollinger Bands!