I probably need to back up a step: My original data looks something like this:
t=: 4 : '(y#x),.?y#2' ]tst=: > each(10 t 6),"2 (11 t 5), 12 t 8 ┌──┬─┐ │10│0│ ├──┼─┤ │10│1│ ├──┼─┤ │10│1│ ├──┼─┤ │10│1│ ├──┼─┤ │10│1│ ├──┼─┤ │10│0│ ├──┼─┤ │11│0│ ├──┼─┤ │11│1│ ├──┼─┤ │11│0│ ├──┼─┤ │11│0│ ├──┼─┤ │11│0│ ├──┼─┤ │12│0│ ├──┼─┤ │12│1│ ├──┼─┤ │12│0│ ├──┼─┤ │12│1│ ├──┼─┤ │12│1│ ├──┼─┤ │12│1│ ├──┼─┤ │12│0│ ├──┼─┤ │12│0│ └──┴─┘ I want to box the boolean second column using the first column for an index: f1 tst ┌──┬───────────────┐ │10│1 1 1 1 0 1 │ ├──┼───────────────┤ │11│0 1 0 0 0 │ ├──┼───────────────┤ │12│0 1 0 1 1 1 0 0│ └──┴───────────────┘ Or maybe this is better if it get rid if the fills. f2 tst ┌──┬───────────┬──┬─────────┬──┬───────────────┐ │10│1 1 1 1 0 1│11│0 1 0 0 0│12│0 1 0 1 1 1 0 0│ └──┴───────────┴──┴─────────┴──┴───────────────┘ However, I need to find a boolean string givem it's index: 11 fb f2 tst ┌─────────┐ │0 1 0 0 0│ └─────────┘ Skip ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
