Legend command in a for loop

Hi everyone, I was trying to add a legend to series of plots in a for loop but I didn't manage to do this. That's my code:

i=-4:0.5:4
Param.beta=i;
...
 if i<0
        figure(1)
        fplot(@(ST) p_cev(0.9,ST,Param),[0, 2]);
        title(['CEV density, \beta<0'])
        hold on
    else
        figure(2)
        fplot(@(ST) p_cev(0.9,ST,Param),[0,2]);
        title(['CEV density, \beta>=0'])
        hold on

      end
  end

If I use the command

legend=['\beta=',num2str(i)]);

Matlab gives me back a legend in which only the last itemof the loop is represented. Do you have any suggestion to fix it? Thanks.

[Geoff Hayes]

Giano - please clarify where in the above code you are creating the legend. You initialized i as an array of beta values (?) but then create the legend as

 legend(['beta=','num2str(i)]);

(which is slightly different from your call). Is i still an array or an scalar? (Note that MATLAB uses i and j to represent the imaginary number so you may want to rename this local variable to something else.)

Do you add a legend for both figures or just one?

When you call legend, you are adding a new legend to the figure so any previously created one (on a previous iteration if that is what is happening) won't be updated...the new one will just "take its place".

Please show more of your code so that we can see how you are invoking legend. You may just want to wait until all iterations have been completed and then create the legend and pass in a cell of strings (one string per plot).