fill and feather

fill(x,y,'b')

>> x=1:0.1:10;
>> y=sin(x);
>> fill(x,y,'b')

效果如下图

fill.jpg

feather(z) & compass(z)

>> theta=linspace(0,2*pi,20);
>> z=sin(theta)+i*cos(theta);
>> feather(z)
>> figure
>> compass(z)

效果如下图

feather.jpg
compass.jpg

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