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Using SLICE on a 3D Image Volume

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Sean de Wolski
Sean de Wolski on 28 Jun 2011
Answered: Adam on 1 Oct 2014
Hi Guys,
I have what should be a simple problem but what I'm sad to say I can't figure out. I have a 3-dimensional image volume. I want to view a slice of it using the slice function but can't get seem to get it. The slice should range from: size(X,1) at page 1 to 1 in the first dimension at size(X,3). (So for an example perfect cube 500x500x500, the slice would be 45degrees into the third dimension).
Here's a sketch I made: http://dropdo.com/55E/Picture%2014
I've toyed with the slice function demo, but can't seem to figure out how to make it diagonal in only one dimension. Any pointers please on how to set up x,y,z is much appreciated?
Thanks! - Sean

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Accepted Answer

Patrick Kalita
Patrick Kalita on 28 Jun 2011
Maybe you're looking for something like this?
% Define 3D data
[x,y,z] = meshgrid(linspace(-1,1,30));
v = x.^2 + y.^2 + z.^2;
% Define the slice plane
[xi, yi] = meshgrid(linspace(-1,1,50));
zi = xi;
% Slice it
slice(x,y,z,v,xi,yi,zi);

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Sean de Wolski
Sean de Wolski on 28 Jun 2011
Exactly!
Changed to represent volumetric data (100x100x100):
% Define 3D data
[x,y,z] = meshgrid(1:100);
v = repmat(magic(100),[1 1 100]);
% Define the slice plane
[xi, yi] = meshgrid(1:100);
zi = xi;
% Slice it
slice(x,y,z,v,xi,yi,zi);
Thanks!

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More Answers (1)

Adam
Adam on 1 Oct 2014
You can rotate along one axis using the rotate() function. Check out this page
Adam

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