How to color RED to the lower portion of the curve
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How to color RED to the lower portion of the curve y=x^2
x = 1 : 0.1 : 10;
y = x.^2;
plot(x,y)
axis([1 10 0 100])
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采纳的回答
Kye Taylor
2013-4-18
Replace the
plot(x,y)
command with
area(x,y,'FaceColor',[1 0 0])
6 个评论
Kye Taylor
2013-4-19
the first two inputs to patch can be thought of as points that define vertices of some polygon. the vectors x and y are the lower parts of that polygon. By adding a point (0,100) to the set of vertices, we get the top left corner of the polygon. Without that vertex, the behavior was as you said above, only the "upper portion" was colored instead of the "whole upper part".
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