This controls the opacity/transparency of the range area chart used to display the limit value, using fields Low and High as thresholds.
The main sparkline chart and the limit chart are each interpolated :
- Line interpolate : interpolation method used for the main sparkline chart
- Limits interpolate : interpolation method used for the limits range chart
Available interpolation methods are :
A cubic basis spline
The result is a smooth curve which doesn’t exactly pass through the data points themselves.
A series of interconnected lines.
The result is that of a line chart.
A cubic spline that preserves monotonicity in y, assuming monotonicity in x.
The result is a smooth curve which goes through all data points and doesn’t overshoot.
A step line centered on the data point.
The result is a step line which is constant around the data points.
A step line starting on the data point.
The result is a step line which is constant after the data points.
A step line ending on the data point.
The result is a step line which is constant before the data points.
The color of each sparkline chart is picked from an indexed palette defined under Color > Tags.
You can add/remove colors and customize them.
If there is more Tags than colors, the colors are cycled.
The sparkline charts can be configured to be drawn with a variable line thickness depending on the value.
Check Use Trail and define :
- Trail Size Low : the line thickness when the value is low
- Trail Size High : the line thickness when the value is high
This completely changes the display : instead of showing separate sparkline charts side-by-side, they are all superimposed on the same chart.