How can I find a row in a matrix in which all elements apply to a relational operator?

I have a large data set and would like to know how I could find all the rows in which each element has a certain value. The matrix could look like this:

A =

         0         0         0         0         0         0         0         0
         0         0         0    0.1000    0.1000         0         0         0
         0         0    0.1000    0.3000    0.3000    0.1000         0         0
    0.3000    0.3000    0.3000    0.3000    0.3000    0.3000    0.3000    0.3000
    0.3000    0.3000    0.3000    0.1000    0.1000    0.3000    0.3000    0.3000
         0         0    0.1000    0.3000    0.3000    0.1000         0         0
         
        

How could I find the fourth row if my requirement is that every element in a row should be larger than 0.25? I already looked into functions like unique, find and all, but I could not modify them in such way that it applies to a row. Preferably I would get a column containing the number of all the rows that applies to the condition. Thanks in advance!

Answer 1

[Stephen23]

>> idx = all(A>0.25,2) % logical index
idx =
     0
     0
     0
     1
     0
     0
>> find(idx) % subscript index
ans =
     4

In many cases using logical indices is more efficient than subscript indices.