To clarify my question further, the operators used
in my verb e are completely fictitious. For example |&{. in
the following line bears no relation to my problem and the
resulting calculations in each select case is fictional,
too.
z=. x|&{.b
I am thinking that some of the possible aspects to
the solution could be monadic = , key /. , and agenda @. ,
but I can't put them together. There may be even be an apply
128!:2 .
So how do I group the similar y data values so that
I can operate the same way within the groups, but
differently on different groups, when I don't know how to
construct the group until I have examined each group's y
value's relation to its x value, first?
And in my real case, both the x and y value of each
group is used in the case calculation, not just the y value,
as my example might suggest. That is, the case calculation
is dyadic, not monadic.
Thanks, in advance,
(B=)
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
