Hi, consider the following operations/evaluations: ? = I(2) > 0 0 ? = I(2) >= 0 1 ? = I(2) > -1 1 It looks as if the non-dotted greater-(equal)-than operator between a matrix and a scalar behaves as if it checked every possible element-wise comparison to obtain the scalar result. In other words, it does "is-everything-greater-than?". However, I couldn't find any mention of this in the guide, whereas of course the element-wise dotted version is explained. Is the non-dotted action intended/supported/official? thanks sven