How can I add legend to graph with each loop for ezplot?

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Akshay Kumar
Akshay Kumar 2016-9-16
评论： Walter Roberson 2016-9-18
Hello,
I am plotting blending function of bezier curve, in which number of blending curve depends on the number of control points taken.
Now, my problem is I want to add legend for each graph(ezplot) which is plotted by running loop?
Please! help me.
Code is:
%%Plotting of blending curve
for i=1:length(b)
ezplot(b(i),[min(u),max(u)])
hold on
end

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回答（1 个）

Walter Roberson
Walter Roberson 2016-9-16
%%Plotting of blending curve
for i=1:length(b)
h(i) = ezplot(b(i),[min(u),max(u)]);
leg_entries{i} = sprintf('b = %g', b(i));
hold on
end
legend(h, leg_entries)
  2 个评论
Akshay Kumar
Akshay Kumar 2016-9-18
Thank you sir,
but when I applied the same code, it is not accepting as [b] is symbolic matrix.
if true
% code
%%Plotting of blending curve
for i=1:length(b)
h(i) = ezplot(b(i),[min(u),max(u)]);
leg_entries{i} = sprintf('b = %g', b(i));
hold on
end
legend(h, leg_entries)
((Error using sprintf
Function is not defined for 'sym' inputs.))
end
But I got the idea from you to store the legend information in cell array. and that worked with some modification.
ezplot(b(i),[min(u),max(u)]);
legendinfo{i}=['B',int2str(i),',',int2str(length(b))];
thank you sir,
Akshay Kumar

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