How to graphically represent 3D array

Question

Dejan Nikolic 2014-12-6

回答： Amit 2014-12-9

Hi,

I have the following problem:

3d array is generated and consists of 0s and 1s. I need to draw a line (in 3D) which connects all elements which value is 1.

I have tried with plot3 and scatter3 functions, but I haven't achieve any success. The only thing I get is empty space.

I have using following commands:

plot3(Xcoordinate,Ycoordinate,Zcoordinate,'r','linewidth',2)

Or

scatter3(Xcoordinate,Ycoordinate,Zcoordinate,'r','linewidth',2)

X, Y, Zcoordinate are vectors reprsenting axes of a 3d array.

Thank you for your time,

Dejan

Answer 1

Amit 2014-12-9

Lets say you have a 3D matrix with m x n x k size.

Then:

[X,Y,Z] = meshgrid(1:m,1:n,1:k);
plot3(X(A == 1),Y(A == 1),Z(A == 1),'r','linewidth',2))

This will do it !