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27 lines
483 B
C
27 lines
483 B
C
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// A regression line and confidence area
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#ifndef REGRESSION_H
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#define REGRESSION_H
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#include "chartitem.h"
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class StatsAxis;
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class StatsView;
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struct regression_data {
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double a,b;
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double res2, r2, sx2, xavg;
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int n;
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};
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class RegressionItem : public ChartPixmapItem {
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public:
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RegressionItem(StatsView &view, regression_data data, StatsAxis *xAxis, StatsAxis *yAxis);
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~RegressionItem();
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void updatePosition();
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private:
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StatsAxis *xAxis, *yAxis;
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regression_data reg;
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};
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#endif
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