Using if-statements seperatly for each value in an array
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I use if-statements which depend on a certain value. Now, instead of this single value, I have an array with a number of values (roughly 500), each representing one machine. Now for each of these values, the if statement should make a decision. I could do this with a loop around the if-statement, running the loop once for each value. However, all of this is iterated for 60.000 time steps or more, so this kind of loop slows down the simulation immensely. Do you see any smarter way of doing what I put in the example code? Basically a way in which in one go, all the if-statement is applied individually to each array value?
numberOfMachines = 500;
x = randi([0,1],numberOfMachines,1);
for n=1:numberOfMachines
if x(n) == 1
y(n) = 10;
else
y(n) = 0;
end
end
采纳的回答
David Hill
2022-2-9
numberOfMachines = 500;
x = randi([0,1],numberOfMachines,1);
y=zeros(size(x));
y(x==1)=10;
4 个评论
David Hill
2022-2-9
or
numberOfMachines = 500;
y = 10*(randi(2,numberOfMachines,1)-1);
dpb
2022-2-9
or
numberOfMachines = 500;
x = randi([0,1],numberOfMachines,1);
y=x*10;
since filled x with 0,1.
The latter above doesn't pair y with x unless reset the seed; as written it will generate a new random sample. This, of course, presumes, OP wants/needs both x and y; if only y is the needed end result then generating directly is most efficient, true.
Florian Hölscher
2022-2-9
编辑：Florian Hölscher
2022-2-9
Florian Hölscher
2022-2-9
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