I need to smooth a 3d graph
4 views (last 30 days)
Show older comments
this is tha data I have now and i need to smooth it out thank you! there is no errors or red text in the following code
x=1:10;
y=1:21;
z=[0 0 0 0 0 0 0 0 0 0; 0 0 0 0 0 -9 0 0 0 0; 0 0 0 0 -5 -7 0 0 0 0; 0 0 -10 -25 -15 -5 0 0 0 0; 0 -20 -32 -46 -27 -7 0 0 0 0; 0 -17 -61 -82 -21 0 0 0 0 0; 0 -12 -28 -52 -30 -12 0 0 0 0; 0 -22 -43 -79 -53 -30 -12 0 0 0; 0 -15 -38 -63 -92 -68 -33 0 0 0; 0 0 -15 -37 -61 -49 -22 0 0 0; 0 0 0 -17 -56 -30 -17 0 0 0; 0 0 0 -15 -56 -30 -17 0 0 0; 0 0 -15 -32 -54 -94 -79 -31 0 0; 0 0 -21 -15 -25 -52 -37 -20 0 0; 0 0 -15 -40 -70 -49 -20 -15 0 0; 0 0 -11 -23 -14 -20 -46 -29 -14 0; 0 0 0 -10 -27 -39 -25 -15 0 0; 0 0 0 -15 -32 -56 -26 -10 0 0; 0 0 0 -10 -17 -25 -15 0 0 0; 0 0 0 0 -20 -10 0 0 0 0; 0 0 0 0 -5 0 0 0 0 0; 0 0 0 0 0 0 0 0 0 0];
surf(z);
0 Comments
Answers (1)
John D'Errico
on 26 Nov 2022
x=1:10;
y=1:21;
z=[0 0 0 0 0 0 0 0 0 0; 0 0 0 0 0 -9 0 0 0 0; 0 0 0 0 -5 -7 0 0 0 0; 0 0 -10 -25 -15 -5 0 0 0 0; 0 -20 -32 -46 -27 -7 0 0 0 0; 0 -17 -61 -82 -21 0 0 0 0 0; 0 -12 -28 -52 -30 -12 0 0 0 0; 0 -22 -43 -79 -53 -30 -12 0 0 0; 0 -15 -38 -63 -92 -68 -33 0 0 0; 0 0 -15 -37 -61 -49 -22 0 0 0; 0 0 0 -17 -56 -30 -17 0 0 0; 0 0 0 -15 -56 -30 -17 0 0 0; 0 0 -15 -32 -54 -94 -79 -31 0 0; 0 0 -21 -15 -25 -52 -37 -20 0 0; 0 0 -15 -40 -70 -49 -20 -15 0 0; 0 0 -11 -23 -14 -20 -46 -29 -14 0; 0 0 0 -10 -27 -39 -25 -15 0 0; 0 0 0 -15 -32 -56 -26 -10 0 0; 0 0 0 -10 -17 -25 -15 0 0 0; 0 0 0 0 -20 -10 0 0 0 0; 0 0 0 0 -5 0 0 0 0 0; 0 0 0 0 0 0 0 0 0 0];
surf(z)
Simplest is a convolution based blur. This one is a simple distance weighting:
n = 3;
n2 = (n-1)/2;
[x,y] = meshgrid((1:n) - n2);
K = 1./(1 + sqrt((x - n2).^2 + (y - n2).^2));
K = K/sum(K,'all')
zhat = conv2(K,z)./conv2(ones(size(z)),K);
surf(zhat)
See Also
Categories
Find more on Line Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!