1 files changed, 10 insertions, 0 deletions
diff --git a/chart2/source/inc/PolynomialRegressionCurveCalculator.hxx b/chart2/source/inc/PolynomialRegressionCurveCalculator.hxx
index 6037fc742a78..e47d882d4903 100644
--- a/chart2/source/inc/PolynomialRegressionCurveCalculator.hxx
+++ b/chart2/source/inc/PolynomialRegressionCurveCalculator.hxx
@@ -22,6 +22,11 @@
 #include "RegressionCurveCalculator.hxx"
 #include <vector>
 
+namespace RegressionCalculationHelper
+{
+    typedef std::pair< std::vector< double >, std::vector< double > > tDoubleVectorPair;
+}
+
 namespace chart
 {
 
@@ -44,6 +49,11 @@ private:
         const css::uno::Sequence<double>& aXValues,
         const css::uno::Sequence<double>& aYValues ) override;
 
+    void computeCorrelationCoefficient(
+        RegressionCalculationHelper::tDoubleVectorPair& rValues,
+        const sal_Int32 aNoValues,
+        double yAverage );
+
     std::vector<double> mCoefficients;
 };