What is a grid

A grid is a graphical indicator of data values. A grid is attached to an axis and is composed of:

• Major grid lines, with an associated rendering style.

• Minor grid lines, with an associated rendering style.

A grid is displayed within a chart by a dedicated object, defined by the IlvGrid class.

The purpose of the IlvGrid class is to handle the graphical representation of a grid. The default behavior of the IlvGrid class automatically handles the grid graphical representation according to the type of chart. For example, a Cartesian chart has a rectangular grid for both the x- and y-axis, while a polar chart has a circular x-grid. It also uses by default the major and minor steps of a scale to draw the major and minor ticks of the scale. By default, grids are automatically initialized when a chart is created.

You can retrieve a grid from its axis using the methods getXGrid and getYGrid.

You can change the grid of an axis using the methods setXGrid and setYGrid.