How to stop for loop if E approximately = 0.8.?
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clc;
clear all;
close all;
[x,y]=meshgrid(-1:2/128:1);
circ=(x.^2+y.^2)<1;
A=ones(129,129);
B=A.*circ;
a1= 12849;
figure(1)
imagesc(B),colormap gray;axis image;axis off;
[x1,y1]=meshgrid(-1:2/128:1);
for r=0:0.001:1
circ1=(x1.^2+y1.^2)<r;
C=B.*circ1;
D=sum(sum(C));
E=D/a1
if (E ~= 0.8)
end
end
figure(2)
imagesc(C),colormap gray;axis image;axis off;
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採用された回答
John D'Errico
2016 年 1 月 19 日
tol = 1.e-12;
[x1,y1]=meshgrid(-1:2/128:1);
for r=0:0.001:1
circ1=(x1.^2+y1.^2)<r;
C=B.*circ1;
D=sum(sum(C));
E=D/a1;
if abs(E - 0.8) <= tol
break
end
end
figure(2)
imagesc( C ),colormap gray;axis image;axis off;
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