From 49fcd0bcac545a6f7df372fbfd44a05ffb103262 Mon Sep 17 00:00:00 2001
From: koldo <koldo@f0d560ea-af0d-0410-9eb7-867de7ffcac7>
Date: Fri, 20 Feb 2015 22:45:42 +0000
Subject: [PATCH] ScatterDraw: Improved initial coefficients guessing

git-svn-id: svn://ultimatepp.org/upp/trunk@8190 f0d560ea-af0d-0410-9eb7-867de7ffcac7
---
 uppsrc/ScatterDraw/Equation.h    | 7 ++++++-
 uppsrc/ScatterDraw/ScatterDraw.t | 1 -
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/uppsrc/ScatterDraw/Equation.h b/uppsrc/ScatterDraw/Equation.h
index bff44cad2..60e03daea 100644
--- a/uppsrc/ScatterDraw/Equation.h
+++ b/uppsrc/ScatterDraw/Equation.h
@@ -95,8 +95,13 @@ public:
 	virtual String GetName() 			       	{return t_("Polynomial");}
 	virtual String GetFullName() 		       	{return t_("Polynomial") + String(" n = ") + FormatInt(degree);}
 	virtual String GetEquation(int numDigits = 3);
-	virtual void GuessCoeff(DataSource &series) {coeff[0] = series.AvgY();}
 	void SetDegree(int num)				       	{degree = num;	SetNumCoeff(num + 1);}
+	virtual void GuessCoeff(DataSource &series) {
+		coeff[0] = series.AvgY();
+		int realDegree = degree;
+		for (degree = 2; degree < realDegree; degree++) 
+			Fit(series);
+	}
 };	
 
 class PolynomialEquation2 : public PolynomialEquation {
diff --git a/uppsrc/ScatterDraw/ScatterDraw.t b/uppsrc/ScatterDraw/ScatterDraw.t
index 453c04483..e6b228586 100644
--- a/uppsrc/ScatterDraw/ScatterDraw.t
+++ b/uppsrc/ScatterDraw/ScatterDraw.t
@@ -62,4 +62,3 @@ caES("Racional_1")
 esES("Racional_1")
 euES("")
 frFR("")
-