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

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

Answer 1

[Walter Roberson]

      %%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)

[Akshay Kumar]

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

[Walter Roberson]

You could also use

leg_entries{i} = sprintf('b = %s', char(b(i)));