MATLAB: Labelling x and y axis in pole zero map with latex

axisaxis labelslatexpole-zero mappzplotundocumentedxlabelylabel

I need to edit x and y axis in pole zero map command in matlab, but I think just because the units are difined in this command, I can't edit them in latex.
I write this command but it doesn't change :
clear all
clc
syms l1 l2 c s gd g1 g2 g3 g4 g5 h1 ts xi x il1 vrc vp ig vin vrcn r1
%%

l1=500e-6;
l2=250e-6;
c=100e-6;
wr=sqrt((l1+l2)/(l1*l2*c));
xi=0;
%%
Glcl_d=(1/(s*l1*l2*c)*(1/(s^2+2*xi*wr*s+wr^2)));
[symNum,symDen] = numden(Glcl_d); %Get num and den of Symbolic TF
TFnum = sym2poly(symNum);    %Convert Symbolic num to polynomial
TFden = sym2poly(symDen);    %Convert Symbolic den to polynomial
an =tf(TFnum,TFden);
pzplot(an,'r')
sgrid
title('Pole-Zero Map','Interpreter','latex');
xlabel('\%Real Axis,\textit{$1/sec$} ','defaultTextInterpreter','latex');
ylabel('Imaginary Axis','Interpreter','latex');
but every time I get this figure : how can I edit x and y axis ??
thx

Best Answer

The handles are deeply buried and undocumented....
h = pzplot(an,'r')
xlabel('\%Real Axis, ')
h.AxesGrid.XUnits = '\textit{$1/sec$} '; 
ylabel('Imaginary Axis') % Really no need for this line
h.AxesGrid.YUnits = ''; 
title('Pole-Zero Map')
h.AxesGrid.BackgroundAxes.Title.Interpreter = 'Latex';
h.AxesGrid.BackgroundAxes.XLabel.Interpreter = 'Latex'; 
h.AxesGrid.BackgroundAxes.YLabel.Interpreter = 'Latex';
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