import { Type } from "./type";
/**
 * Describes available methods of plotting data with unknown values in a series.
 * <para>Double.NaN and null are examples of unknown values.</para>
 */
export declare enum UnknownValuePlotting {
    /**
     * Plot the unknown value as the midpoint between surrounding known values using linear interpolation.
     */
    LinearInterpolate = 0,
    /**
     * Do not plot the unknown value on the chart.
     */
    DontPlot = 1
}
/**
 * @hidden
 */
export declare let UnknownValuePlotting_$type: Type;