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How to see difference in color which has been overlapped between two fills?

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Ajay Goyal
Ajay Goyal 2018-6-15
评论： Ajay Goyal 2018-6-18
I have two curves; for example
clc; clear all; close all;
x1=[-1:0.01:1];
y1=1-x1.^2;
x2=[-2:0.01:2];
y2=1-x2.^2;
fill(x1,y1,'k')
hold on, fill(x2,y2,'c')
Now I want to see clear difference of color which has been overlapped.As of now can only see the dominating color (in this example, I could not see black color. I wish to see resultant color (resultant color of combination of cyan and black) of overlap. Kindly help

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采纳的回答

Image Analyst
Image Analyst 2018-6-15
Specify the 'FaceAlpha' opacity/transparency factor:
fill(x2, y2, 'c', 'FaceAlpha', 0.6)
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Walter Roberson
Walter Roberson 2018-6-16
x2=[-2:0.01:2];
y2=1-x2.^2;
fill(x2,y2,'c')
hold on
x1=[-1:0.01:1];
y1=1-x1.^2;
fill(x1,y1,'k','faceAlpha',0.6)
x3=[-0.5:0.01:0.5];
y3=1-x3.^2;
fill(x3,y3,'w')

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