Here are just a few examples of Point (Scatter) charts created using Chartz

Up to 6 point (scatter) sets can be displayed on each chart.
An optional B-spline smoothing line can be shown, as can a Trend or Exponential trend line.
As with many charts, an additional data line can be added, with optional point or line visibilty.
Or an equation line can be added. Here the equation Y=8+4*sin(x)*cos(x^2) is drawn.
Automatic color each point for a single data set takes just one click. Shown also is grid banding, and a horizontal (draggable) reference line.
Point sets can be shown in 3D.
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