The legend of the plot doesn't appear

3 次查看(过去 30 天)
Hi,
I want to plot a signal with a title and legend. But the legend doesn't appear on the plot, wheareas the title do.
Can someone help me please ?

回答(2 个)

madhan ravi
madhan ravi 2020-7-8
  6 个评论
madhan ravi
madhan ravi 2020-7-8
Strange , try contacting the MathWorks support team for support.

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Image Analyst
Image Analyst 2020-7-8
编辑:Image Analyst 2020-7-8
Works for me:
t = 20;
ech = 0.001;
k = 1;
for i = 0:ech:t
y(k,:) = [i 3+sin(4*i)/5+cos(8*i)/9];
k = k + 1;
end
plot(y(:,1),y(:,2));
legend("signal");
Except that I don't get a title on my plot using your very same code. I don't see how you got a title instead of a legend. Are you sure you're not confusing the legend (inside the box inside the plot) with a title?
Try, in the command window:
>> restoredefaultpath
and try again.
  1 个评论
Lucas Veit
Lucas Veit 2020-7-8
Finally I have found the problem. Yesterday I worked on a file but there was a mistake because of the legend of a plot, so the file "legend.m" opened and I changed something accidently. Now it workes again !

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