matlab绘制koch（科赫曲线，雪花曲线）分形曲线
matlab plot函数绘制koch曲线程序，程序还是比较简单的，这里只绘制出了雪花的三分之一
function koch_curve(number)%number代表koch的阶数，范围为大于等于2
figure
set(gcf,'position',);%设置窗口分辨率，和分别为窗口左上角和右下角坐标可根据自己的屏幕分辨率调整，注释掉这句则使用matlab默认窗口分辨率
n=2;
koch1=;
for i=1:number
koch2=zeros(4*n-3,2);
k=2;
for j=2:n
koch2(k,:)=[(koch1(j-1,1)*2+koch1(j,1))/3,(koch1(j-1,2)*2+koch1(j,2))/3];
koch2(k+1,:)=[(koch1(j-1,1)+koch1(j,1)+sqrt(3)*(koch1(j-1,2)-koch1(j,2))/3)/2,(koch1(j-1,2)+koch1(j,2)-sqrt(3)*(koch1(j-1,1)-koch1(j,1))/3)/2];
koch2(k+2,:)=[(koch1(j,1)*2+koch1(j-1,1))/3,(koch1(j,2)*2+koch1(j-1,2))/3];
koch2(k+3,:)=koch1(j,:);
k=k+4;
end
n=4*n-3;
x=koch2(:,1);
y=koch2(:,2);
plot(x,y)
axis equal
koch1=koch2;
pause(1);
end
end
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