Examples of mrstk.ComplexArray

mrstk.ComplexArray
This class represents an array of complex doubles. There are not many such implementations available: Jampack's Z1 is the best I could find, although it is imcomplete. I'm using a combination of Z1 and Matlab's core array functionality as a model for this class, but all the code is original.
This, along with ComplexScalar and DoubleArray, are intended to provide basic Complex and array functionality that Matlab provides. Therefore the nomenclature is modeled after Matlab where possible. @author bolan

        scalar_array[2] = x.getElement(2);
        scalar_array[3] = y.getElement(0);
        scalar_array[4] = y.getElement(1);
        scalar_array[5] = y.getElement(2);
        
        ComplexArray a = new ComplexArray(scalar_array);
        assertEquals(6, a.getLength());
        assertTrue(a.equals(x.concatenate(y), epsilon));        
    }

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    }


    @Test
    public void testSubArray_4args() throws Exception {
        
        ComplexArray z = x.subArray(1, 1, 2);
        System.out.println("Subarray z " + z.toString());
        assertEquals(2, z.getLength() );
        assertEquals(0.0975, z.getElement(0).imag(), epsilon);
    }

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    }


    @Test
    public void testSubArray_3args() throws Exception {
        
        ComplexArray z = x.concatenate(y).subArray(3, 5);
        System.out.println("Subarray z " + z.toString());
        assertEquals(3, z.getLength() );
        assertEquals(-0.9595, z.getElement(0).imag(), epsilon);
    }

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    }


    @Test
    public void testExtractElements() {
        int[] indices = {0, 1, 4, 5};
        ComplexArray z = x.concatenate(y).extractElements(indices);
        assertEquals(4, z.getLength());
        assertEquals(0.1217, z.getElement(0).real());
        assertEquals(0.1419, z.getElement(3).imag());
    }

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        assertEquals(2.653440533500398, y.getSum(reductionMode.ABS), epsilon);
    }


    @Test
    public void testAdd_ComplexArray() {
        ComplexArray z = x.add(y);
        System.out.println(x + " + " + y + " = " + z);
        assertEquals(x.getLength(), z.getLength());
        assertTrue(x.getElement(1).add(y.getElement(1)).equals(
                z.getElement(1), epsilon));
        assertEquals(-1.591900000000000, z.getElement(0).imag(), epsilon);
    }

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        assertEquals(-1.591900000000000, z.getElement(0).imag(), epsilon);
    }


    @Test
    public void testAdd_ComplexScalar() {
        ComplexArray z = x.add(y.getElement(2));
        System.out.println(x + " + " + y.getElement(2) + " = " + z);
        assertEquals(x.getLength(), z.getLength());
        assertTrue(x.getElement(1).add(y.getElement(2)).equals(
                z.getElement(1), epsilon));
        assertEquals( -0.490500000000000, z.getElement(0).imag(), epsilon);
    }

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        assertEquals( -0.490500000000000, z.getElement(0).imag(), epsilon);
    }
    
    @Test
    public void testSubtract_ComplexArray() {
        ComplexArray z = x.subtract(y);
        System.out.println(x + " - " + y + " = " + z);
        assertEquals(x.getLength(), z.getLength());
        assertTrue(x.getElement(1).subtract(y.getElement(1)).equals(
                z.getElement(1), epsilon));
        assertEquals(0.327100000000000, z.getElement(0).imag(), epsilon);
    }

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        assertEquals(0.327100000000000, z.getElement(0).imag(), epsilon);
    }
    
    @Test
    public void testSubtract_ComplexScalar() {
        ComplexArray z = x.subtract(y.getElement(2));
        System.out.println(x + " - " + y.getElement(2) + " = " + z);
        assertEquals(x.getLength(), z.getLength());
        assertTrue(x.getElement(1).subtract(y.getElement(2)).equals(
                z.getElement(1), epsilon));
        assertEquals( -0.774300000000000, z.getElement(0).imag(), epsilon);
    }

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        assertEquals( -0.774300000000000, z.getElement(0).imag(), epsilon);
    }
    
    @Test
    public void testMultiply_ComplexArray() {
        ComplexArray z = x.multiply(y);
        System.out.println(x + " .* " + y + " = " + z);
        assertEquals(x.getLength(), z.getLength());
       
        assertTrue(x.getElement(1).multiply(y.getElement(1)).equals(
                z.getElement(1), epsilon));
        assertEquals(-0.722294150000000, z.getElement(0).imag(), epsilon);
    }

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    }
    
    @Test
    public void testMultiply_doubleArray() {
        double[] realVals = y.toDoubleArray(reductionMode.REAL);
        ComplexArray z = x.multiply(realVals);
        System.out.println(x + " .* " + y + " = " + z);
        assertEquals(x.getLength(), z.getLength());
       
        assertTrue(x.getElement(1).multiply(realVals[1]).equals(
                z.getElement(1), epsilon));
        assertEquals(-0.605523000000000, z.getElement(0).imag(), epsilon);
    }

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mrstk.ComplexArrayTest

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