test2.m

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tic
for i=1:10
r = logical(round(rand(30,30,8,1000)));
end       
toc
 
tic
for i=1:100
r = int8(randi([0,Hologram.grayLevels-1],1,30*30*100));
r = logical(int2bit(r,8));
r =reshape(r,log2(Hologram.grayLevels),30,30,100);
r = permute (r,[2 3 1 4]);
end
 
toc
 
tic
maxrand=Hologram.grayLevels-1;
depth = log2(Hologram.grayLevels);
for i=1:100
r = int8(randi([0,maxrand],1,30*30*100));
r = logical(int2bit(r,8));
r =reshape(r,depth,30,30,100);
r = permute (r,[2 3 1 4]);
end
 
toc
 
size(r)