Rick: My ability to read tacit expressions is so poor that I overlooked the fact that the your quoted output did not come directly from the Key expression; silly me, I thought there was some form of the modifiers/arguments to Key that yielded the results of two inputs.
(In contrast to your skill, it took be about a half a day to come up with the tacit dyad(?) mmjnn=:(; ,.) to glue together my trigram table and one result vector.) So I wonder if I dare ask again: why do the sizes of the x and y argument to Key need to match? (Thanks again for all the help!) > On Oct 12, 2019, at 5:16 AM, Ric Sherlock <tikk...@gmail.com> wrote: > >>> Or to summarise by trigram: >>> >>> (~.@; trig);|: <: #/.~&> supertrig >>> >>> +---+---+ >>> >>> |ggt|1 2| >>> >>> |gta|2 0| >>> >>> |taa|1 1| >>> >>> |aaa|2 0| ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm