Java DatasetUtilities.findRangeBounds方法代码示例

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range for an axis.
 *
 * @param axis  the axis.
 *
 * @return The range for an axis.
 */
public Range getDataRange(ValueAxis axis) {

    if (this.dataset == null) {
        return null;
    }

    Range result = null;

    if (axis == getDomainAxis()) {
        result = DatasetUtilities.findDomainBounds(this.dataset);
    }
    else if (axis == getRangeAxis()) {
        result = DatasetUtilities.findRangeBounds(this.dataset);
    }

    return result;

}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Some tests for the findRangeExtent() method.
 */
public void testFindRangeBounds1() {
    CategoryDataset dataset = createCategoryDataset1();
    Range r = DatasetUtilities.findRangeBounds(dataset);
    assertEquals(1.0, r.getLowerBound(), EPSILON);
    assertEquals(6.0, r.getUpperBound(), EPSILON);
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Some tests for the findRangeBounds() method.
 */
public void testFindRangeBounds2() {
    XYDataset dataset = createXYDataset1();
    Range r = DatasetUtilities.findRangeBounds(dataset);
    assertEquals(100.0, r.getLowerBound(), EPSILON);
    assertEquals(105.0, r.getUpperBound(), EPSILON);
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * A small test for the data range calculated on this dataset.
 */
public void testDataRange() {
    OHLCDataItem[] data = new OHLCDataItem[3];
    data[0] = new OHLCDataItem(new Date(11L), 2.0, 4.0, 1.0, 3.0, 100.0);
    data[1] = new OHLCDataItem(new Date(22L), 4.0, 9.0, 2.0, 5.0, 120.0);
    data[2] = new OHLCDataItem(new Date(33L), 3.0, 7.0, 3.0, 6.0, 140.0);
    DefaultOHLCDataset d = new DefaultOHLCDataset("S1", data);
    Range r = DatasetUtilities.findRangeBounds(d, false);
    assertEquals(1.0, r.getLowerBound(), EPSILON);
    assertEquals(9.0, r.getUpperBound(), EPSILON);
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range of values the renderer requires to display all the 
 * items from the specified dataset.
 * 
 * @param dataset  the dataset (<code>null</code> permitted).
 * 
 * @return The range (<code>null</code> if the dataset is <code>null</code> 
 *         or empty).
 */
public Range findRangeBounds(XYDataset dataset) {
    if (dataset != null) {
        Range r = DatasetUtilities.findRangeBounds(dataset, false);
        return new Range(r.getLowerBound() + this.yOffset, 
                r.getUpperBound() + this.blockHeight + this.yOffset);
    }
    else {
        return null;
    }
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range of values the renderer requires to display all the
 * items from the specified dataset.
 *
 * @param dataset  the dataset (<code>null</code> permitted).
 *
 * @return The range (<code>null</code> if the dataset is <code>null</code>
 *         or empty).
 */
public Range findRangeBounds(XYDataset dataset) {
    if (dataset != null) {
        return DatasetUtilities.findRangeBounds(dataset, false);
    }
    else {
        return null;
    }
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range required by this renderer to display all the range
 * values in the specified dataset.
 * 
 * @param dataset  the dataset (<code>null</code> permitted).
 * 
 * @return The range, or <code>null</code> if the dataset is 
 *     <code>null</code>.
 */
public Range findRangeBounds(XYDataset dataset) {
    if (dataset != null) {
        return DatasetUtilities.findRangeBounds(dataset, true);
    }
    else {
        return null;
    }
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range of values the renderer requires to display all the 
 * items from the specified dataset.  This takes into account the range
 * of values in the dataset, plus the flag that determines whether or not
 * the base value for the bars should be included in the range.
 * 
 * @param dataset  the dataset (<code>null</code> permitted).
 * 
 * @return The range (or <code>null</code> if the dataset is 
 *         <code>null</code> or empty).
 */
public Range findRangeBounds(CategoryDataset dataset) {
    Range result = DatasetUtilities.findRangeBounds(dataset);
    if (result != null) {
        if (this.includeBaseInRange) {
            result = Range.expandToInclude(result, this.base);
        }
    }
    return result;
}
 

import org.jfree.data.general.DatasetUtilities; //导入方法依赖的package包/类
/**
 * Returns the range of values the renderer requires to display all the
 * items from the specified dataset.
 *
 * @param dataset  the dataset (<code>null</code> permitted).
 *
 * @return The range (or <code>null</code> if the dataset is
 *         <code>null</code> or empty).
 */
public Range findRangeBounds(CategoryDataset dataset) {
    return DatasetUtilities.findRangeBounds(dataset);
}