Example usage for org.jfree.data DomainInfo getDomainLowerBound

Introduction

In this page you can find the example usage for org.jfree.data DomainInfo getDomainLowerBound.

Prototype

public double getDomainLowerBound(boolean includeInterval);

Source Link

Document

Returns the minimum x-value in the dataset.

Usage

From source file:org.jfree.data.general.DatasetUtils.java

/**
 * Finds the minimum domain (or X) value for the specified dataset.  This
 * is easy if the dataset implements the {@link DomainInfo} interface (a
 * good idea if there is an efficient way to determine the minimum value).
 * Otherwise, it involves iterating over the entire data-set.
 * <p>/*from  w ww .  j  a v a  2  s.  c o m*/
 * Returns {@code null} if all the data values in the dataset are
 * {@code null}.
 *
 * @param dataset  the dataset ({@code null} not permitted).
 *
 * @return The minimum value (possibly {@code null}).
 */
public static Number findMinimumDomainValue(XYDataset dataset) {
    Args.nullNotPermitted(dataset, "dataset");
    Number result;
    // if the dataset implements DomainInfo, life is easy
    if (dataset instanceof DomainInfo) {
        DomainInfo info = (DomainInfo) dataset;
        return new Double(info.getDomainLowerBound(true));
    } else {
        double minimum = Double.POSITIVE_INFINITY;
        int seriesCount = dataset.getSeriesCount();
        for (int series = 0; series < seriesCount; series++) {
            int itemCount = dataset.getItemCount(series);
            for (int item = 0; item < itemCount; item++) {

                double value;
                if (dataset instanceof IntervalXYDataset) {
                    IntervalXYDataset intervalXYData = (IntervalXYDataset) dataset;
                    value = intervalXYData.getStartXValue(series, item);
                } else {
                    value = dataset.getXValue(series, item);
                }
                if (!Double.isNaN(value)) {
                    minimum = Math.min(minimum, value);
                }

            }
        }
        if (minimum == Double.POSITIVE_INFINITY) {
            result = null;
        } else {
            result = new Double(minimum);
        }
    }

    return result;
}

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From source file:org.jfree.data.general.DatasetUtilities.java

/**
 * Finds the minimum domain (or X) value for the specified dataset.  This
 * is easy if the dataset implements the {@link DomainInfo} interface (a
 * good idea if there is an efficient way to determine the minimum value).
 * Otherwise, it involves iterating over the entire data-set.
 * <p>/*from w ww . j  av a  2  s .  co  m*/
 * Returns <code>null</code> if all the data values in the dataset are
 * <code>null</code>.
 *
 * @param dataset  the dataset (<code>null</code> not permitted).
 *
 * @return The minimum value (possibly <code>null</code>).
 */
public static Number findMinimumDomainValue(XYDataset dataset) {
    ParamChecks.nullNotPermitted(dataset, "dataset");
    Number result;
    // if the dataset implements DomainInfo, life is easy
    if (dataset instanceof DomainInfo) {
        DomainInfo info = (DomainInfo) dataset;
        return new Double(info.getDomainLowerBound(true));
    } else {
        double minimum = Double.POSITIVE_INFINITY;
        int seriesCount = dataset.getSeriesCount();
        for (int series = 0; series < seriesCount; series++) {
            int itemCount = dataset.getItemCount(series);
            for (int item = 0; item < itemCount; item++) {

                double value;
                if (dataset instanceof IntervalXYDataset) {
                    IntervalXYDataset intervalXYData = (IntervalXYDataset) dataset;
                    value = intervalXYData.getStartXValue(series, item);
                } else {
                    value = dataset.getXValue(series, item);
                }
                if (!Double.isNaN(value)) {
                    minimum = Math.min(minimum, value);
                }

            }
        }
        if (minimum == Double.POSITIVE_INFINITY) {
            result = null;
        } else {
            result = new Double(minimum);
        }
    }

    return result;
}

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