Example usage for org.jfree.data Range scale

Introduction

In this page you can find the example usage for org.jfree.data Range scale.

Prototype

public static Range scale(Range base, double factor) 

Source Link

Document

Scales the range by the specified factor.

Usage

From source file:org.jfree.data.RangeTest.java

/**
 * A simple test for the scale() method.
 *///w ww  .  j a va  2  s .  c o  m
@Test
public void testScale() {
    Range r1 = new Range(0.0, 100.0);
    Range r2 = Range.scale(r1, 0.10);
    assertEquals(0.0, r2.getLowerBound(), 0.001);
    assertEquals(10.0, r2.getUpperBound(), 0.001);

    r1 = new Range(-10.0, 100.0);
    r2 = Range.scale(r1, 2.0);
    assertEquals(-20.0, r2.getLowerBound(), 0.001);
    assertEquals(200.0, r2.getUpperBound(), 0.001);

    // Scaling with a factor of 1 does not change the range
    r2 = Range.scale(r1, 1.0);
    assertEquals(r1, r2);

    try {
        Range.scale(null, 0.1);
        fail("Null value is accepted");
    } catch (Exception e) {
    }

    try {
        Range.scale(r1, -0.5);
        fail("Negative factor accepted");
    } catch (Exception e) {
    }
}

---