Least squares method (least squares analysis) is a mathematical optimization technology, which by minimizing the square error and one set of data to find the best matching function. Least squares method is the simplest way to achieve some absolutely unknown true value, so that the sum of squared error for the smallest. Least square method is usually used for curve fitting (least squares fitting). There are circular curve fitting formula derivation process and realize vc.

最小二乘法的圆曲线拟合

......................\ChildFrm.cpp
......................\ChildFrm.h
......................\FastHitTest.cpp
......................\FastHitTest.h
......................\GDI+Files
......................\.........\GdiPlus.h
......................\.........\GdiPlus.lib
......................\.........\GdiPlusBase.h
......................\.........\GdiPlusBitmap.h
......................\.........\GdiPlusBrush.h
......................\.........\GdiPlusCachedBitmap.h
......................\.........\GdiPlusColor.h
......................\.........\GdiPlusColorMatrix.h
......................\.........\GdiPlusEnums.h
......................\.........\GdiPlusFlat.h
......................\.........\GdiPlusFont.h
......................\.........\GdiPlusFontCollection.h
......................\.........\GdiPlusFontFamily.h
......................\.........\GdiPlusGpStubs.h
......................\.........\GdiPlusGraphics.h
......................\.........\GdiPlusHeaders.h
......................\.........\GdiPlusimageAttributes.h
......................\.........\GdiPlusImageCodec.h
......................\.........\GdiPlusImaging.h
......................\.........\GdiPlusInit.h
......................\.........\GdiPlusLineCaps.h
......................\.........\GdiPlusMatrix.h
......................\.........\GdiPlusMem.h
......................\.........\GdiPlusMetaFile.h
......................\.........\GdiPlusMetaHeader.h
......................\.........\GdiPlusPath.h
......................\.........\GdiPlusPen.h
......................\.........\GdiPlusPixelFormats.h
......................\.........\GdiPlusRegion.h
......................\.........\GdiPlusStringFormat.h
......................\.........\GdiPlusTypes.h
......................\IPLab.aps
......................\IPLab.clw
......................\IPLab.cpp
......................\IPLab.dsp
......................\IPLab.dsw
......................\IPLab.h
......................\IPLab.ncb
......................\IPLab.opt
......................\IPLab.plg
......................\IPLab.rc
......................\IPLabDoc.cpp
......................\IPLabDoc.h
......................\IPLabView.cpp
......................\IPLabView.h
......................\MainFrm.cpp
......................\MainFrm.h
......................\QGdiPlus.h
......................\ReadMe.txt
......................\res
......................\...\icon1.ico
......................\...\IPLab.ico
......................\...\IPLab.rc2


......................\...\r16.bmp
......................\...\Toolbar.bmp
......................\resource.h
......................\StdAfx.cpp
......................\StdAfx.h
......................\ViewActionBase.cpp
......................\ViewActionBase.h
......................\ViewActionEditTool.cpp
......................\ViewActionEditTool.h
......................\ViewActionImageTool.cpp
......................\ViewActionImageTool.h

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