in a loop like go back

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Lev Mihailov 2019-9-19

编辑： Matt J 2019-9-19

Hello! Now I use this loop

for i=1:length(data) 
    if a(i)<=1
       a(i)=a(i-1)    
    end
end

but I was faced with the calculation that the zones of zero values and they give me the wrong result

a(i)=a(i-1) % find(a)

what’s the best way to write, not a (i-1), but write a (i up to the first value that meets the if condition)

Matt J 2019-9-19

编辑：Matt J 2019-9-19

first=find(a<=1, 1);
a(1:first)

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