Plot an Gaussian function..

Question

Lizan 2012-10-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/51619-plot-an-gaussian-function

Hi, I am trying to plot a 2D/3D plot of a Gaussian function but I am having some issues. I don't see a Gaussian.. anyone that can help?

Example:

X_pixel = 2500; Y_pixel = 2000; 
A = 100;
x0 = X_pixel/2; 
y0 = Y_pixel/2;
sigma_x = 25e-6;
sigma_y = 0.5e-6;
for theta = 1:pi/4:pi 
disp('plot')
[X, Y] = meshgrid(0:1:(X_pixel), 0:1:(Y_pixel));
Z = A*exp( - (((X-x0).^2)/(2*(sigma_x^2)))) - (((Y-y0).^2)/(2*(sigma_y^2)))) ;
figure 
surf(X,Y,Z);
colormap(cool)
shading interp;
colorbar
%view(90,90);
axis equal;
drawnow
end

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Answer 1

Image Analyst 2012-10-23

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/51619-plot-an-gaussian-function#answer_62911

Your parentheses in Z are messed up (not matching) and your sigmas (100^-6) are way way too small to be seen for x going from 0-2500. Try something like 500 or so.