豆粑粑 画不同透明度的圆
别人的问题，在一个图里画不同透明度的圆。MinVal = -1;MaxVal = 1;
MaxRadius = 0.5;
nCircles = 10;
Dimension = 2;
Circles = zeros(nCircles, Dimension);
Radius = zeros(nCircles, 1);
cmap = jet(nCircles); %// define colors.
alpha = .1; %// define level of transparency
for i = 1 : nCircles
Circles(i,:) = unifrnd(MinVal, MaxVal, );
Radius(i) = unifrnd(0, MaxRadius, 1);
end
t = 0 : .1 : 2 * pi;
hold on;
for i = 1 : nCircles
x = Radius(i) * cos(t) + Circles(i,1);
y = Radius(i) * sin(t) + Circles(i,2);
patch(x, y, 'none', 'facecolor', cmap(i,:), 'facealpha', alpha*i, ...
'edgecolor', 'none'); %// plot filled circle with transparency
end
axis equal; %// same aspect ratio in both axes
grid on;
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