regression-line-widths

Arguments: plot-view

Returns the regression-line-widths property of a plot-view object, which is associated with a plot-widget control. The value may be set at creation time by passing the :regression-line-widths initarg to make-instance, or any time later by calling (setf regression-line-widths).

This is a list of line widths for regression lines for the multiple chart-objects of the plot-widget. The first element of the list is the line width to use for the first chart object, and so on, cycling back through the list as needed.

Each value in the list should be a positive integer. The default value is a list of the number 2, to draw all regression lines two pixels thick.

The regression lines are drawn only if the draw-regression-lines property of the plot-view is true.

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Created 2012.5.30.