renamed a getter fnc in PiecewisePolynomial and minor tidy up.

include/ITABase/Math/PiecewisePolynomial.h

@@ -49,6 +49,8 @@ namespace ITABase
 		inline int NumCoefficients() const { return Order() + 1; };
 		//! Returns the break points defining the intervals for the polynomials
 		inline const std::vector<float>& BreakPoints() const { return vdBreakPoints; };
+		//! Returns the Coefficients of that Polynom. Sorted according to ascending intervals [a0, b0, c0, d0, a1, b1, c1, d1]
+		inline const std::vector<float>& Coefficients() const { return vdCoefficients; };
 
 		//! Evaluate the piecewise polynomial at a given x value.
 		float Value(const float & xValue) const;
@@ -58,8 +60,6 @@ namespace ITABase
 		int IntervalIndex(const float xValue) const;
 		//! Return a piecewise polynomial containing the derivations of the polynomials of this one
 		CPiecewisePolynomial Derivation() const;
-		//! Debug only?!
-		std::vector<float>::const_iterator getCoefficients() const { return vdCoefficients.begin(); }
 
 	private:
 		//! Returns the iterator to the first coefficient of the interval with given index

tests/SplineTest.cpp

@@ -62,7 +62,7 @@ int main(int iNumInArgs, char* pcInArgs[])
 	std::vector<float> vdResult2 = { float(77.0000),    float(7.9485),   float(18.7512),   float(50.0000),   float(70.7647),   float(36.3051),   float(28.0000)
 	*/
 	//Test 2, Speedtest
-	/*
+	
 	std::vector<float> vdSupportingPoints{ -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
 	std::vector<float> vdDataPoints2{ 77,    80,    19,    49,    45,    65,    71,    76,    28,    68,    66,    17,12,    50,    96,    35,    59,    23,    76,    26,    51 };
 	std::vector<float> vdX = { -10,  float(1.5),  float(-7.898),float(3.3), float(3.3), float(9.9),float(-2.5),float(8.9),float(0.01),float(-4.3) };
@@ -86,8 +86,8 @@ int main(int iNumInArgs, char* pcInArgs[])
 		myWatch.stop();
 	}
 	std::cout << myWatch << std::endl;
-	*/
-
+	
+	/*
 	//Test 3, export Coefficients to .txt to plot them in Matlab
 	std::vector<float> vdSupportingPoints{ -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
 	std::vector<float> vdDataPoints{ 77,    80,    19,    49,    45,    65,    71,    76,    28,    68,    66,    17,12,    50,    96,    35,    59,    23,    76,    26,    51 };
@@ -124,7 +124,7 @@ int main(int iNumInArgs, char* pcInArgs[])
 	//should trhow exception
 	myPoly2.Value(2);
 	
-
+	*/
 	
 	
 	return 0;

tests/spline_compare.m

-%% Create Matlab and ITA::BASE splines
-X = [-10:1:10];
-Y = [77 80 19 49 45 65 71 76 28 68 66 17 12 50 96 35 59 23 76 26 51]; %randi(100,1,21)
-Coeffs = [-24.4868088000000 0 27.4868088000000 77;...%Copy & Paste from the resulting ITA::BASE Spline 
-    58.4340477000000 -73.4604263000000 -45.9736176000000 80;...
-    -54.2493782000000 101.841713000000 -17.5923386000000 19;...
-    33.5634651000000 -60.9064217000000 23.3429565000000 49;...
-    -22.0044861000000 39.7839775000000 2.22050858000000 45;...
-    16.4544754000000 -26.2294807000000 15.7750053000000 65;...
-    -30.7892181747901 23.0766833120257 12.6794720000000 71;...
-    54.7927242498993 -69.2909712123447 -33.5017530375546 76;...
-    -47.3816788248071 95.0872015373532 -7.70552271254611 28;...
-    4.73399104932904 -47.0578349370681 40.3238438877390 68;...
-    23.4457146274910 -32.8558617890810 -39.5898528384100 66;...
-    -7.51684955929288 37.4812820933919 -34.9644325340990 17;...
-    5.62168360968059 14.9307334155133 17.4475829748062 12;...
-    -49.9698848794294 31.7957842445550 64.1741006348744 50;...
-    79.2578559080372 -118.113870393733 -22.1439855143039 96;...
-    -75.0615387527194 119.659697330378 -20.5981585776589 35;...
-    77.5513382000000 -106.515846000000 -7.03549194000000 59;...
-    -85.7249985000000 126.138168000000 12.5868301000000 23;...
-    73.3486862000000 -131.036835000000 7.68815231000000 76;...
-    -29.6697369000000 89.0092087000000 -34.3394737000000 26];
-myPoly = mkpp(X,Coeffs);
-%% Plot
-xx = [-10:0.1:10];
-plot(X,Y,'o',xx,spline(X,Y,xx));
-hold on
-grid on
-title 'Splines: Matlab vs. ITA'
-plot(xx,ppval(myPoly,xx));
-plot(xx,spline(X,Y,xx)-ppval(myPoly,xx));
-legend('Data','Matlab','ITA','Diff');