MATLAB: How to avoid for loop

for loop

can this 'for loop' be replaced? thanks in advance
counts=[];
for i=1 : length(b)-1
c=length(tof( tof >= b(i) & tof < b(i+1)) ) ;
counts=[counts,c];
end

Best Answer

A ,ore efficient version of the loop:
nb     = numel(b) - 1;
counts = zeros(1, nb);   % Pre-allocation!!!
for i = 1:nb
   counts(i) = sum(tof >= b(i) & tof < b(i+1));
end
Is tof a scalar or a vector? Is b sorted? Are you looking for histcounts ?
Pre-allocation is essential, because letting an array grow iteratively is extremely expensive.
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