How to use plot in this case?

I'm building GUI and I have to print result of this code below in axes (I mean I'd like to replace freqz by plot) but I don't know how to do it. Could you show me how?

if true
  % b = fir1(n,0.5, filtr ,kaiser(n+1,0.5));
    freqz(b,1)
end

[MathReallyWorks]

Hello Patryk,

What are n and filtr in your code? It will be great if you attach your full code.

[Patryk Hennig]

filtr is just a type - bp, hp, lp, bs and n is filter order

Answer 1

[MathReallyWorks]

I don't understand why you want to replace freqz() by plot(). freqz() is a better option because it gives magnitude and phase response directly.

You can directly print freqz(). No need to use plot().

 n=2;
b = fir1(n,0.5, 'high' ,kaiser(n+1,0.5));
freqz(b,1)
saveas(gcf, 'responses', 'jpg'); %This will save the graph in jpg format

[Patryk Hennig]

Cause I can't control size of the axes window when I used the old one function