draw-minor-grid-lines

Arguments: chart-axis

Returns the value of the draw-minor-grid-lines property of a chart-axis. The value may be set at creation time by passing the :draw-minor-grid-lines initarg, or any time later by calling (setf draw-minor-grid-lines).

A value indicating whether (and how) grid lines are drawn for the minor tic positions of a chart-axis in a chart-widget. The possible values are the same as for draw-major-grid-lines, though they refer to the minor tic positions rather than the major ones. The default value is nil.

A minor grid line is not drawn if a major grid line is drawn in the same place.

See chart-widget and also cg-chart-widget.htm.

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Created 2015.5.21.