MATLAB: How to plot 3-D grid data in scatter plot

Question

Hello Community,

I have 2 datasets from a 3-D simulation model. I can easily read these datasets into Matlab and see the data. I now want to plot these 2 datasets on a scatter plot. I am struggling to get this data plotted.

I load the grid with:

>> A=load('PERM2.mat')

A =

struct with fields:

Node: [1×1 struct]

Same for 2nd dataset.

When I do:

>> plot(A.Node.Value,B.Node.Value)

Error using plot

Data cannot have more than 2 dimensions.

And this is where I am stuck. Any suggestion what I am doing wrong or what I need to do to plot these 2 datasets? I have attached the 2 datasets.

Thanks,

Ferry

Answer 1

I think your mat files has 3D matrices. You need to use cpcolor or surf to plot them.

load PERM2.mat ;
A = Node.Value ;
[m,n,p] = size(A) ;
for i = 1:p
    pcolor(A(:,:,i))
    shading interp 
    colorbar
    drawnow
end

If you have x, y you can provide them in pcolor.