| Allegro CL version 9.0Unrevised from 8.2 to 9.0. 8.2 version |

**Arguments: ***
plot-view
*

Returns the **draw-regression-lines** 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 :draw-regression-lines initarg to
**make-instance**, or any time
later by calling **(setf draw-regression-lines)**.

This is a boolean value (`nil`

or true)
indicating whether to draw a regression line for each of the
**chart-objects** of the
`plot-widget`

. When drawn,
each regression line will be a straight line segment that minimizes
the sum of the squares of vertical distances between the plotted
points for one chart object and the regression line itself. The
default value is `nil`

, and so no regression
lines are drawn by default.

The line styles that are used to draw the regression lines may be
specified with the **regression-line-colors**,
**regression-line-dashings**,
and **regression-line-widths**
properties.

Copyright (c) 1998-2012, Franz Inc. Oakland, CA., USA. All rights reserved.

Documentation for Allegro CL version 9.0. This page was not revised from the 8.2 page.

Created 2012.5.30.

| Allegro CL version 9.0Unrevised from 8.2 to 9.0. 8.2 version |