How to reshape in 3D a downsampled matrix

Let's say I have this data:

factor=2;    
data=zeros(40,20,74);
    data(1:factor:end,1:factor:end,1:factor:end)=1; 

Now, I would like to get a new "data" matrix just retaining the values "ones".

Thanks in advance,

TS

Answer 1

[Turlough Hughes]

Easiest thing to do would be just this:

newData = data(1:factor:end,1:factor:end,1:factor:end);

[Turlough Hughes]

You might find the methods in the imresize function to be useful.