多条件While循环（在同一变量中带有多个条件）

Question

Here's the basic setup. I am trying to create a while loop that will iterate until a set condition is below a certain tolerance. However, this loop must be generalized for multiple values within the same matrix. An example (simplified from what I'm currently trying to accomplish):

x = [3; 2]
tolerance = [0,0]
iter = 0
while x > tolerance
x = x - 1;
iter = iter + 1;
end

The issue I am facing is that the while loop will exit as soon as 1 of the values in the function is less than the tolerance. What I intend to occur is that the while loop will continue to iterate on both variables until both are below the desired tolerance. I am unable to have two separate loops because the size of the variable I will be iterating upon is not set at 2 values.

Any kind of help would be greatly appreciated.

Answer 1

Matlab has a couple of related functions, any and all that help with this kind of thing.

any , which returns true if any of the elements are truthy, will help you here:

while any(x>tolerance)
   ...
end

You can also do other tricks like

while sum(x>tolerance) > 0

to achieve the same thing, but I like how semantically clear any is.