Getting gray colored lines in a line plot

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Marin
Marin 2012-8-25
评论： Juan Agullo 2021-3-23
Hi,
so I have this plot and there are several lines that I need to plot and I would like some of them to be black, some colored (I know how to do that) and some gray. So how do I get the gray color? And, also, how do I control it? I would like some of the gray lines to be darker and some lighter.
Thank You in advance!

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Azzi Abdelmalek
Azzi Abdelmalek 2012-8-25
编辑：Azzi Abdelmalek 2012-8-25
plot(t,y,'color',[0,0,0 ]) % Black
plot(t,y,'color',[0,0,0]+alpha) % for alpha= 0 to 1 the lines will be more clear
% example
t=0:0.1:10;y=sin(t)
for k=1:20
plot(t,y,'linewidth',8,'Color',[0 0 0]+0.05*k);pause(0.5);
end
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