Can I generate two correlated random fields in matlab

5 次查看（过去 30 天）
Jaime De La Mota Sanchis
Hello everyone.
I am currently working with the functions avaiable at Random Field Simulator. I have been able to follow the examples and generate some two-dimensional gaussian random fields using the KL expansion. However, I also need to generate a second random field correlated to the first one (these are suposed to represent zonal and meridional winds). I don't know how to do this. Can someone please tell me if they have worked with this software and if it is possible to generate a second correlated process?
This is the code I am using in the same folder as the two downloaded functions from Random Field Simulator in case someone wants to take a look.
% % build the correlation struct
corr.name = 'gauss';
corr.c0 = [0.7 0.1]; % anisotropic correlation
numberOfPoints=51;%number of points in a square of size 1
x = linspace(0,1,numberOfPoints);
[X,Y] = meshgrid(x,x); mesh = [X(:) Y(:)]; % 2-D mesh
% set a spatially varying variance (must be positive!)
corr.sigma = cos(pi*mesh(:,1)).*sin(2*pi*mesh(:,2))+1.5;
[F,KL] = randomfield(corr,mesh,'trunc', 20, 'filter', 1);
trunc = length(KL.sv); % get the truncation level
W = randn(trunc,100);
F2 = repmat(KL.mean,1,100) + KL.bases*diag(KL.sv)*W;
Any answer is appreciated.
Best regards.
Jaime.

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by