Contour Plot when both x & y axis are in logscale

Can anyone help me to contour plot when both x & y axis are in logscale? Please see the figure.

I have coded like below but it didn't show logscale in both axis:

f=logspace(-3,0,100);

R0=logspace(-6,-2,100);

[X,Y]=meshgrid(f,R0);

%%%Main code body

....

.....

.....

Z=1+(gamma/(k*d^2))*(f.^2*delL+delR+2*R0.*X.*Gamma_func);

%%%%%%%

contour(X,Y,Z)

Answer 1

[Alexis Carranza Hidalgo]

x = linspace(0,2*pi);
y = linspace(0,4*pi);
[X,Y] = meshgrid(x,y);
Z = sin(X)+cos(Y);

% Plot using contour
figure;
contour(X,Y,Z);

% Use the 'set' command to graph in log scale
set(gca, 'XScale', 'log');
set(gca, 'YScale', 'log');
axis tight; % Adjust the axis limits 
xlabel('X');
ylabel('Y');

[AD]

What should we do to set scale to millimeters?

Answer 2

[Chunru]

[x, y, z] = peaks;
x = x+4; y = y+4;  z=z+8;      % make it positive
figure
contourf(x, y, z);
colorbar
xlabel('x'); ylabel('y');

figure
%contour(log10(x), log10(y), z);
contourf(log10(x), log10(y), log10(z));
h2 = colorbar;
zt = h2.Ticks;
h2.TickLabels = "10^{"+string(zt')+"}";

% customize ticklabels
xt = xticks;
xticklabels("10^{"+string(xt')+"}");
yt = yticks;
yticklabels("10^{"+string(yt')+"}");
xlabel('x'); ylabel('y');  

[Md Jahid Hasan Sagor]

Thank you for your response. Pls see my figure. I want log scaling in both X and Y axis.

[Chunru]

Yes. The plot has log scaling for both X and Y axes. Do you also want to have log-scale z-axis?

The code has been updated for log scale for x, y and z axes.

[Md Jahid Hasan Sagor]

Thank you.But what you plotted is not representing the axis are in logarithm scale.

[Chunru]

What do you mean? They are indeed in log scale.