major-label-frequency-offset

Arguments: chart-axis

Returns the value of the major-label-frequency-offset property of a chart-axis. The value may be set at creation time by passing the :major-label-frequency-offset initarg, or any time later by calling (setf major-label-frequency-offset).

The number of major tic positions before the first major tic label is drawn. The value should be a non-negative integer. The default value is 0, to draw the first major tic label at the first major tic position.

This property is meaningful only when the major-label-frequency is greater than one. If that property is 4, for example, and major-label-frequency-offset is 1, then major tic labels would be drawn at major tic positions 1, 5, 9 and so on.

If the chart-items-limit property of the chart-widget has caused some items to be pushed off, then this offset is relative to all current items plus the ones that have been pushed off, so that labels remain on the same logical chart items as some are pushed off.

This property is used only when the draw-major-labels property of the chart-axis is true.

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

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Created 2019.8.20.