| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version | ||||||||||
Arguments: plot-widget value-type value-index &key object-index object-id
Returns an individual value that is in a plot-widget. This could be a value that was
added by calling set-plot-value or a value that is returned by
the widget's plot-value-returner function if it has one. The
value will be nil if the plot does not define
a value for the specified value-type, value-index, and object, and
otherwise it will be a number.
plot-widget is the widget to be accessed.
value-type is the type of value to return. This argument may be one of the following keywords:
:x: The X coordinate of the value-index'th point to
plot for some object.
:y: The Y coordinate of the value-index'th point to
plot for some object.
:x-high: an optional value that's normally greater
than the X coordinate. Typically represents an error range.
:x-low: an optional value that's normally less than
the X coordinate.
:y-high: an optional value that is normally greater
than the Y coordinate.
:y-low: an optional value that's normally less than
the Y coordinate.
:icon-size: an optional size for a built-in icon
that is drawn at X,Y.
value-index is the zero-based index of the plot value to access.
The keyword arguments are:
nil to not
specify an object index. The default is zero if neither this argument
nor object-id is
true. object-index takes precedence if both are
true. The widget's chart-object-id-equality-test is used to find a
matching object-index.
nil to not specify an ID.
See plot-widget.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version | ||||||||||