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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "charttest.hxx"
#include <com/sun/star/chart2/XRegressionCurveContainer.hpp>
#include <com/sun/star/chart2/XRegressionCurveCalculator.hpp>
#include <SpecialCharacters.hxx>
// Define the index of sheets in the test document
#define SHEET_POTENTIAL1 0
#define SHEET_POTENTIAL2 ( SHEET_POTENTIAL1 + 1)
#define SHEET_POTENTIAL_LAST ( SHEET_POTENTIAL2 )
#define SHEET_LINEAR1 ( SHEET_POTENTIAL_LAST + 1 )
#define SHEET_LINEAR_LAST ( SHEET_LINEAR1 )
#define SHEET_POLYNOMIAL1 ( SHEET_LINEAR_LAST + 1 )
#define SHEET_POLYNOMIAL_LAST ( SHEET_POLYNOMIAL1 )
#define SHEET_EXPONENTIAL1 ( SHEET_POLYNOMIAL_LAST + 1 )
#define SHEET_EXPONENTIAL2 ( SHEET_EXPONENTIAL1 + 1 )
class Chart2TrendCalculators : public ChartTest
{
public:
void setUp() override;
void tearDown() override;
void testPotentialRegression1();
void testPotentialRegression2();
void testLinearRegression1();
void testPolynomialRegression1();
void testExponentialRegression1();
void testExponentialRegression2();
CPPUNIT_TEST_SUITE(Chart2TrendCalculators);
CPPUNIT_TEST(testPotentialRegression1);
CPPUNIT_TEST(testPotentialRegression2);
CPPUNIT_TEST(testLinearRegression1);
CPPUNIT_TEST(testPolynomialRegression1);
CPPUNIT_TEST(testExponentialRegression1);
CPPUNIT_TEST(testExponentialRegression2);
CPPUNIT_TEST_SUITE_END();
private:
Reference<chart2::XRegressionCurve> m_xCurve;
Reference< chart2::XRegressionCurveCalculator > m_xRegressionCurveCalculator;
void loadCalculatorFromSheet(sal_Int32 nSheet);
void checkCalculator(
const Sequence< double >& xValues, const Sequence< double >& yValues,
const OUString& sExpectedFormula );
};
void Chart2TrendCalculators::setUp()
{
ChartTest::setUp();
load("/chart2/qa/extras/data/ods/", "trend_calculators.ods");
}
void Chart2TrendCalculators::tearDown()
{
m_xRegressionCurveCalculator.clear();
m_xCurve.clear();
ChartTest::tearDown();
}
void Chart2TrendCalculators::loadCalculatorFromSheet(sal_Int32 nSheet)
{
Reference<chart2::XChartDocument> xChartDoc = getChartDocFromSheet(nSheet, mxComponent);
CPPUNIT_ASSERT_MESSAGE("failed to load chart", xChartDoc.is());
CPPUNIT_ASSERT(xChartDoc.is());
Reference<chart2::XDataSeries> xDataSeries = getDataSeriesFromDoc(xChartDoc, 0);
CPPUNIT_ASSERT(xDataSeries.is());
Reference<chart2::XRegressionCurveContainer> xRegressionCurveContainer(xDataSeries, UNO_QUERY_THROW);
Sequence< Reference< chart2::XRegressionCurve > > xRegressionCurveSequence = xRegressionCurveContainer->getRegressionCurves();
CPPUNIT_ASSERT_EQUAL(sal_Int32(1), xRegressionCurveSequence.getLength());
m_xCurve = xRegressionCurveSequence[0];
CPPUNIT_ASSERT(m_xCurve.is());
m_xRegressionCurveCalculator = m_xCurve->getCalculator();
CPPUNIT_ASSERT(m_xRegressionCurveCalculator.is());
}
void Chart2TrendCalculators::checkCalculator(
const Sequence< double >& xValues, const Sequence< double >& yValues,
const OUString& sExpectedFormula )
{
m_xRegressionCurveCalculator->recalculateRegression( xValues, yValues );
OUString aRepresentation = m_xRegressionCurveCalculator->getRepresentation ();
CPPUNIT_ASSERT_EQUAL( sExpectedFormula, aRepresentation );
double r2 = m_xRegressionCurveCalculator->getCorrelationCoefficient();
CPPUNIT_ASSERT_DOUBLES_EQUAL( 1.0, r2, 1e-8 );
}
// test y = A x ^ B
void Chart2TrendCalculators::testPotentialRegression1()
{
loadCalculatorFromSheet( SHEET_POTENTIAL1 );
m_xRegressionCurveCalculator->setRegressionProperties( 0, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = 2.0 * pow ( d, 3 );
}
checkCalculator( xValues, yValues, "f(x) = 2 x^3");
}
// test y = A x ^ B
void Chart2TrendCalculators::testPotentialRegression2()
{
loadCalculatorFromSheet( SHEET_POTENTIAL2 );
m_xRegressionCurveCalculator->setRegressionProperties( 0, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = -2.0 * pow ( d, 3 );
}
checkCalculator( xValues, yValues, "f(x) = "+ OUStringChar(aMinusSign) +" 2 x^3");
}
// test y = - 2 X - 5
void Chart2TrendCalculators::testLinearRegression1()
{
loadCalculatorFromSheet( SHEET_LINEAR1 );
m_xRegressionCurveCalculator->setRegressionProperties( 1, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = - 2.0 * d - 5.0 ;
}
checkCalculator( xValues, yValues, "f(x) = "+ OUStringChar(aMinusSign) +" 2 x "+ OUStringChar(aMinusSign) +" 5");
}
// test y = A x ^ B
void Chart2TrendCalculators::testPolynomialRegression1()
{
loadCalculatorFromSheet( SHEET_POLYNOMIAL1 );
m_xRegressionCurveCalculator->setRegressionProperties( 2, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = - 2.0 * d * d + 4 * d - 5;
}
OUString sExpectedFormula( "f(x) = "+ OUStringChar(aMinusSign) +" 2 x" + OUStringChar( aSuperscriptFigures[2] ) + " + 4 x "+ OUStringChar(aMinusSign) +" 5" );
checkCalculator( xValues, yValues, sExpectedFormula );
}
void Chart2TrendCalculators::testExponentialRegression1()
{
loadCalculatorFromSheet( SHEET_EXPONENTIAL1 );
m_xRegressionCurveCalculator->setRegressionProperties( 0, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = 2.0 * exp ( 0.3 * d );
}
checkCalculator( xValues, yValues, "f(x) = 2 exp( 0.3 x )");
}
void Chart2TrendCalculators::testExponentialRegression2()
{
loadCalculatorFromSheet( SHEET_EXPONENTIAL2 );
m_xRegressionCurveCalculator->setRegressionProperties( 0, false, 0, 0 );
Sequence< double > xValues( 7 );
Sequence< double > yValues( 7 );
for (int i=0; i<7; i++)
{
const double d = static_cast<double>(i);
xValues[i] = d;
yValues[i] = -2.0 * exp ( 0.3 * d );
}
checkCalculator( xValues, yValues, "f(x) = "+ OUStringChar(aMinusSign) + " 2 exp( 0.3 x )");
}
CPPUNIT_TEST_SUITE_REGISTRATION(Chart2TrendCalculators);
CPPUNIT_PLUGIN_IMPLEMENT();
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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