Could someone please tell me how the syntax works for the narray, max
and min methods.

if i use @values.max i get the max of the entire array, after reading
the narray documentation http://narray.rubyforge.org/SPEC.en it looks
like i can get the max of a particular dimension at an orthogonal index,
however, i am at a loss to work out how this should be specified
syntatically.

to put it another way, i have a 2D array, and i would like to find the
max and the min, of each of the columns 1…n.