matlab tips

[-] use length(x) instead of max(size(x)) in most of my case.
[-] eval?
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[-] Remove the ticks from a drawing.
set(gca, 'XTick', []);
set(gca, 'YTick', []);
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[-] Matlab automatically resizes the matrix. To avoid frequent reallocations, preallocate the matrix with the zeros command.

a = zeros(1,8000).
If the final array size can vary? cut the excess after the loop.

a = zeros(1, 10000);
count = 0;
for ...

a = a(1:count); % trim the result
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If you have complex code that's resource hungry, find the bottlenecks by profiling your code:

profile on
run your script here
profile off
profile report

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mlint - Helps determine problems in your code.