Getting rid of a for loop

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jacob Mitch
jacob Mitch am 19 Okt. 2019
Kommentiert: jacob Mitch am 20 Okt. 2019
If I have my code as
function [value1, value2] = scope(input)
c=1;
x=length(input);
for z=2:x
if z==x
break
elseif input(z-1)>input(z) && input(z)<input(z+1)
value1(c,1)=z;
value2(c,1)=input(z);
c=c+1;
end
end
Is it possible to get rid of the for look so the function runs without loops. Thank you.

Akzeptierte Antwort

Walter Roberson
Walter Roberson am 19 Okt. 2019
value1 = find(input(1:end-2) > input(2:end-1) & input(2:end-1) < input(3:end)) + 1;
value2 = input(value1);

Weitere Antworten (2)

Turlough Hughes
Turlough Hughes am 19 Okt. 2019
Bearbeitet: Turlough Hughes am 19 Okt. 2019
The following should do the job.
ind=input(1:end-2)>input(2:end-1) & input(2:end-1)<input(3:end);
ind=[false; ind; false]; % If input is a row vector just remove to semi-colons here.
value1=find(ind);
value2=input(ind);

Steven Lord
Steven Lord am 20 Okt. 2019
You're looking for a local minimum in your vector input? [I would choose a different name, BTW, since input already has a meaning.] If so and you're using release R2017b or later use islocalmin.

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