A scatter chart is the type of chart whose data points positions are calculated against a vertical and a horizontal
scales. Each data point is associated with two values. One of them determines the horizontal data point coordinate,
which is calculated against the horizontal scale, and the other value determines the vertical data point coordinate,
calculated against the vertical scale. These values are usually referred to as the xy values. Scatter charts are used
to compare pair of values, showing the relation between them.
Below we can see an XY chart, one of the four different types of scatter charts available in JetChart. Tooltips are
enabled and they pop up if mouse cursor hovers over a data point, displaying related xy values.