matlab画一个曲边圆环

在MATLAB中，可以使用不同的方法来画一个曲边圆环。其中一种方法是利用rectangle函数来实现。以下是一个示例代码：

figure
rectangle('Position',[0,0,5,5],'Curvature',[1,1],'facecolor', [1 0 0], 'edgecolor', 'none');
hold on
rectangle('Position',[1,1,3,3],'Curvature',[1,1],'facecolor', [1 1 1], 'edgecolor', 'none');
axis equal
axis off

这段代码会绘制一个曲边圆环，其中内圆的半径为1，外圆的半径为2，在画布上的位置为(0,0)和(1,1)。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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