MATLAB Answers

How to draw multiple surface plots on the same mesh?

6 views (last 30 days)
I use this code to draw a Gaussian normal distribution. I want to plot several distributions at equal distance from the original one (like the figure).
How can I do so?
lambda = 1; % wavelength
E0 = 1; % max value of E-field amplitude
% ==================================================================
% prepare the coordinates mesh
% ----------------------------
zLin = linspace(-201,201,400) * lambda; % z-coordinate (horizontal)
rLin = linspace(-65,65,100) * lambda; % radius-coordinate (vertical)
[z,r] = meshgrid(zLin,rLin); % create mesh
% ===================================================================
wFactor = 4;
w0 = wFactor * lambda; % minimal waist
zR = pi* w0^2 / lambda; % Rayleigh length
w = w0 * sqrt( 1 + (z / zR) .^2 ); % Beam radius at any arbitrary distance (equ. 3)
% Irradiance
eta = 377; % for free space
I0 = abs(E0)^2/eta;
I = I0 .* (w0 ./ w).^2 .* exp( -2*(r./w).^2 );
surf(z,r,I); shading interp

  1 Comment

VBBV
VBBV on 9 Oct 2020
Use contourf function as
%if true
% code
% end
v2 = 0:0.00009:0.0025;
contourf(z,r,I,v2,'edgecolor','none');shading interp;

Sign in to comment.

Accepted Answer

Deeds
Deeds on 9 Oct 2020
Edited: Deeds on 9 Oct 2020
Did you try hold on?
figure;
surf(z1,r1,I1);
hold on
zlin2= linspace(-101,101,300) * lambda; %whatever shifted values you want
rLin2 = linspace(-65,65,100) * lambda; %whatever shifted values you want
[z2,r2] = meshgrid(zLin2,rLin2);
% similarly define I2 and then plot
surf(z2,r2,I2);

  9 Comments

Show 6 older comments
Muhamed Sewidan
Muhamed Sewidan on 12 Oct 2020
Thank you for your valuable assist.
I wanted basically to draw another gaussian normal distribution next to the original one. So, should I add some offset value to I2 equation?
Deeds
Deeds on 14 Oct 2020
Yes, that should work. Did you try it? All you're supposed to do is tweaking the I2 function in order to find the appropriate fit.

Sign in to comment.

More Answers (0)

Products


Release

R2016a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!