1 files changed, 28 insertions, 0 deletions
diff --git a/stats/regressionitem.h b/stats/regressionitem.h
new file mode 100644
index 000000000..24141122c
--- /dev/null
+++ b/stats/regressionitem.h
@@ -0,0 +1,28 @@
+// A regression line and confidence area
+#ifndef REGRESSION_H
+#define REGRESSION_H
+
+#include "chartitem.h"
+
+class StatsAxis;
+class StatsView;
+
+struct regression_data {
+	double a,b;
+	double res2, r2, sx2, xavg;
+	int n;
+};
+
+class RegressionItem : public ChartPixmapItem {
+public:
+	RegressionItem(StatsView &view, regression_data data, StatsAxis *xAxis, StatsAxis *yAxis);
+	~RegressionItem();
+	void updatePosition();
+	void setFeatures(bool regression, bool confidence);
+private:
+	StatsAxis *xAxis, *yAxis;
+	regression_data reg;
+	bool regression, confidence;
+};
+
+#endif