extracting 1 plot out of multiple plots in a fig

I used freqz(A,B) to generate the amplitude/phase versus frequency plots of a signal.

Now I want to use only the magnitude plot. How can I extract this plot and display just that. Can I display it as a subplot of a series of plots? How?

Thanks

Answer 1

[Aurelien Queffurust]

Using the debug mode , I find that freqz is calling freqzplot . freqzplot is obsolete and fvtool should be used instead. So to get the same result

b = fir1(80,0.5,kaiser(81,8));
freqz(b,1)

I would replace freqz(b,1) by:

   fvtool(b)

[Rohan]

This is my code:

[B,A]= butter(4,.030); Single_HB_30_4= filter(B,A,Single_HB); freqz(B,A)

This gives me 2 plots in one figure. I only want to extract the magnitude plot[1,2,1]. Hod do I do it?

Answer 2

[Azzi Abdelmalek]

select one plot with figure editor then

x=get(gco,'Xdata')
y=get(gco,'Ydata')
plot(x,y)