Strip Charts
Strip charts are polylines whose points define a series of lines. Each cycle,
the polyline is updated with a new set of points.
- Draw a suitable background, including axes.
- Drag a strip chart onto the drawing.
- Set the "id" property and record it for later use.
- Do not stretch the polyline to fit the graph. The scaling
factors are set elsewhere. Stretching the line will also expand the
width and add a position offset.