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74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
#ifndef REGRESSION_DATA_H
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#define REGRESSION_DATA_H
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#include "../curve_view_window_with_cursor.h"
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#include "../data.h"
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namespace Regression {
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class Data : public ::Data, public CurveViewWindowWithCursor {
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public:
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Data();
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// Delete the implicit copy constructor: the object is heavy
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Data(const Data&) = delete;
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// Raw numeric data
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float xValueAtIndex(int index) override;
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float yValueAtIndex(int index) override;
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void setXValueAtIndex(float value, int index) override;
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void setYValueAtIndex(float value, int index) override;
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void deletePairAtIndex(int index) override;
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// Cursor
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int moveCursorHorizontally(int direction) override;
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// the result of moveCursorVertically means:
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// 0-> the window has not changed 1->the window changed
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int moveCursorVertically(int direction) override;
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// Window
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void setDefault();
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// Calculation
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float xSum();
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float ySum();
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float xSquaredValueSum();
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float ySquaredValueSum();
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float xyProductSum();
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float xMean();
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float yMean();
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float xVariance();
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float yVariance();
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float xStandardDeviation();
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float yStandardDeviation();
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float covariance();
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float slope();
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float yIntercept();
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float yValueForXValue(float x);
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float correlationCoefficient();
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float squaredCorrelationCoefficient();
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constexpr static int k_maxNumberOfPairs = 500;
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private:
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float maxXValue();
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float maxYValue();
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float minXValue();
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float minYValue();
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void initWindowParameters();
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bool computeYaxis() override;
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void initCursorPosition() override;
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bool selectClosestDotRelativelyToCurve(int direction);
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bool selectNextDot(int direction);
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// Raw numeric data
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int m_xValues[k_maxNumberOfPairs];
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float m_yValues[k_maxNumberOfPairs];
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// Cursor
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bool m_dotsSelected;
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};
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}
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#endif
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