function?Centre_Radius=Circle_Fit（xy）

?%用多點擬合出一個圓
?%xy為兩個列向量，是圓上的一些點值
?a=[x?y?ones（size（x））]\[-（x.^2+y.^2）];
?centre_x=-0.5*a（1）;
?centre_y=-0.5*a（2）;
?radius=sqrt（（a（1）^2+a（2）^2）/4-a（3））;
?Centre_Radius=[centre_xcentre_yradius];
end

?屬性????????????大小?????日期????時間???名稱
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?????文件???????9013??2012-11-06?10:20??Image\Circle.jpg

?????文件?????102454??2012-09-25?10:01??Image\circle1.bmp

?????文件????????275??2012-10-15?21:57??Image\Circle_Fit.m

?????文件??????17395??2012-11-03?19:26??Image\Circle_Measure.asv

?????文件???????6746??2012-11-06?09:27??Image\Circle_Measure.fig

?????文件??????17117??2012-11-03?19:41??Image\Circle_Measure.m

?????文件?????102454??2012-09-25?10:02??Image\line1.bmp

?????文件???????9651??2012-10-24?20:30??Image\Main_function.asv

?????文件???????9769??2012-11-06?09:22??Image\Main_function.m

?????文件???????1673??2012-10-21?19:25??Image\Subpexil_Division.m

?????文件??????25783??2012-10-21?20:30??Image\工件理想模型.jpg

?????目錄??????????0??2012-11-06?14:59??Image

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???????????????302330????????????????????12