function ff=do_plot(bins,aux,col,col2)    
% aux=aux/max(aux);
% 
% sel=bins>0.015 & bins<0.3;
% 
% 
% fo = fitoptions('Method','NonlinearLeastSquares',...
%                'Lower',[0.2,0,0,0,6,-1,-1],...
%                'Upper',[2,20,1,Inf,12,1,1],...
%                'StartPoint',[1,3,.2,10,8,0,0]);
% % ft = fittype('a-b*x+c*cos(2*pi*f*x)*exp(-d*x)','options',fo);
% ft = fittype('a*exp(-b*x)+c*cos(2*pi*f*x)*exp(-d*x)+g+h*x','options',fo);

% aux=aux/max(aux);
[curve2, ~] = do_fit(bins,aux);

aux=aux/feval(curve2,0);
[curve2, gof2] = do_fit(bins,aux);


subplot(2,2,1)
p1=plot(curve2);
set(p1,'Color',col2,'LineWidth',2);
hold on;
plot(bins,aux,'Color',col);
plot(bins,curve2.a*exp(-curve2.b*bins)+curve2.g+curve2.h*bins,'c');

legend off;
axis([0 .3 0 1.2])

subplot(2,2,2)

plot(bins,curve2.c.*cos(2*pi*curve2.f.*bins).*exp(-curve2.d.*bins),'Color',col2,'LineWidth',2);
hold on;
plot(bins,aux-feval(curve2,bins)'+curve2.c.*cos(2*pi*curve2.f.*bins).*exp(-curve2.d.*bins),'Color',col);

% disp(curve2.f);
% curve2
% gof2
disp(['freq: ' trunc(curve2.f,3) '  R^{2}: ' trunc(gof2.rsquare,3)]);
ff=curve2.f;
axis([0 .3 -.2 .2])


% plot(bins,.2+.9*exp(-6*bins).*(1+.1*cos(2*pi*bins*9)),'b');