From: Ian Scott <ian.m.scott@st...>  20020416 14:21:17

I realise that finding the sum of the elements of a vector is not a "strictly correct" operation on a vector. However that has stopped mean(), min_value(), max_value(), flip(), etc. getting in. I am getting quite tired of writing. vnl_c_cector<double>::sum(x.data_block(), x.size()) instead of x.sum() Unless anyone objects in the few days, I will put a sum() method into vnl_vector. Ian. 