value-types

Arguments: chart-or-plot

Returns the value of the value-types property of a chart-or-plot. For a chart-widget, the value may be set at creation time by passing the :value-types initarg, or any time later by calling (setf value-types).

This property declares which of the possible types of values a chart-or-plot should currently draw. This can be used to filter out some types of values that would otherwise be drawn, or to view different parts of the available data at different times. It is also useful for efficiency by telling the widget not to waste time looking up particular kinds of values that have not been supplied.

The value may be any subset of the list (:value :from-value :high-value :low-value :icon-size). The default value is the entire list. See set-chart-value for the meanings of these value types.

When a chart is being drawn, it will look up only the specified types of values in the chart-items property, to find any that were added there by calls to set-chart-value. If the widget has a chart-value-returner function, then it will be called with each of the specified types of values whenever a value is not found in the chart-items property.

plot-widget values

For a plot-widget, the value may be any subset of the list (:x :y :x-low :x-high :y-low :y-high :icon-size). The default value is the entire list. See set-plot-value for the meanings of these value types.

When a plot is being drawn, it will look up only the specified types of values in the plot-values property, to find any that were added there by calls to set-plot-value. If the widget has a plot-value-returner function, then it will be called with each of the specified types of values whenever a value is not found in the plot-values property.

See also draw-high-low-values.

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

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This page was not revised from the 10.0 page.
Created 2019.8.20.