Creating legend from fittype function

Hi,

I've been trying to create legends for numerous curves I plotted (using fittype/fit functions) on the same graph, but with no success.

All "legend" functions didn't seem to work like I wanted. See my code below with my "%"s as my trial and erros.

Would apprecaite your help in this matter!

Thanks.

x_alpha = [0,2,5];
SF_alpha=[1, 0.0505, 0.02971];
SF_alpha_TMZ=[0.4347, 0.03565, 0.01657];
x_gamma = [0,2,5];
SF_gamma=[1,0.43571,0.07857];
SF_gamma_TMZ=[0.67142,0.35428,0.04642];

% Alpha
g=fittype('exp1');
myfit=fit(x_alpha',SF_alpha',g)
hL1=plot(myfit, x_alpha, SF_alpha)
xlim([0 5.5])
hold on
myfit1=fit(x_alpha',SF_alpha_TMZ',g)
hL2=plot(myfit1, x_alpha, SF_alpha_TMZ)

 
 % Gamma
 m=fittype('exp(-a*x-b*x^2)');
 myfit2=fit(x_gamma',SF_gamma',m)
 hL3=plot(myfit2, x_gamma, SF_gamma)
 myfit3=fit(x_gamma',SF_gamma_TMZ',m)
 hL4=plot(myfit3, x_gamma, SF_gamma_TMZ)

 hold off

 set([hL1(2)],'color','k')
 set([hL2(2)] ,'color','b')
 set([hL3(2)] ,'color','m')
 set([hL4(2)] ,'color','r')
 %h=[hL1;hL2;hL3;hL4];
 %legend(h,'Alpha SF','Alpha SF+TMZ','Gamma SF','Gamma SF+TMZ');
 %legend([hL1;hL2;hL3;hL4], 'Alpha SF','Alpha SF+TMZ','Gamma SF','Gamma SF+TMZ')
 %legend(h, {'Alpha SF','Alpha SF+TMZ','Gamma SF','Gamma SF+TMZ'}, 'Location', 'BestOutside')

 set(gca, 'YScale', 'log')

Answer 1

[KSSV]

Instead of this line:

hL1=plot(myfit, x_alpha, SF_alpha) ;

use:

xi = linspace(min(x_alpha),max(x_alpha)) ;
hL1=plot(xi,myfit(xi), x_alpha, SF_alpha)

And use legend.

[Ran Kagan]

Hi,

I tried using your suggested lines but it draws linear lines rather than using the "exp1" and the second exponent function I wanted.

I suppose there's a method to create the legend simply by using the legend syntax correctly without changing the code itself?