Set the baseline and its colors
In Supercharts, use the upper toolbar chart-type menu and select Baseline. Open the Settings gear, then Symbol. The Baseline section contains the controls below. TradingView documents a default Base level of 50%; 0% is the bottom edge and 100% the top. Price source defaults to Close.
- The baseline adjusts to the displayed chart area. After zooming or scrolling, inspect its price again before comparing screenshots.
- For this exercise, use a regular price scale and record the visible bounds. A 50% height setting does not mean a 50% investment return.
| Control | Action |
|---|---|
| Price source | Choose the price series to plot. Keep it unchanged when comparing references. |
| Top line / Bottom line | Set each line color, thickness, and opacity. |
| Fill top area / Fill bottom area | Set the fill colors and opacity separately. |
| Base level | Change the chart-height percentage to move the boundary up or down. |