| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: chart-axis
Returns the value of the on-print-major-label property of
a chart-axis
. The value
may be set at creation time by passing
the on-print-major-label
initarg, or any
time later by calling (setf on-print-major-label).
A function that returns a label for a major tic position of a
chart-axis
in
a chart-widget
.
The value of this property should be a function or a function name, or
else nil
to default to princ-to-string. The function should take a
chart value as a single argument and return a string to display for
that value. The default value is princ-to-string.
For a value-axis
, the
argument to the function will be a real number between the
range-bottom
and range-top of the axis
(inclusive).
For an item-axis
, the
argument will be a chart item ID. A chart item ID may be any arbitrary
value that has been passed as the item-id
argument to set-chart-value or
returned from a chart-value-returner function when its
value-type argument is :id
.
If no such explicit ID has been provided for a particular chart item,
then the chart item ID defaults to the zero-based integer index of the
chart item.
The returned string may contain embedded newline characters to wrap
labels onto multiple lines. The widget will leave enough space for the
multiple lines of text. For an item-axis
, the printed string will be wrapped at
all spaces automatically if the major-label-wrapping property is true.
This property is used only when the draw-major-labels property of the chart-axis is true. See also major-label-frequency, on-print-minor-label, and on-print-chart-object.
See chart-widget
and also cg-chart-widget.htm.
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 |