On Mon, 23 Aug 2010 17:26:44 +0200, Glen Rubin <rubing...@gmail.com> wrote:
I am trying to write a fn to correlate 2 signals using 3 nested map fn. I have 2 collections of data. THe first group of signals called target looks something like this. target: ( (1,2,3,4) (2,3,4,5) ...) The second collection is called signal and looks like this: signal: ( ((1,2,3,4)(2,3,4,5)(3,4,5,6)) ((2,3,4,5)(3,4,5,6)(4,5,6,7)) ... ) I would like to take the first list in "target" and multiply it by every list in the first group of "signal". And then continue on processing the second list, etc... which would result in something like: ( ((1,4,9,16)(2,6,12,20)(3,8,15,24)) ((4,9,16,25) (6,12,20,30) (8,15,24,35)) ... ) I try a nested map fns like this, but can't get it to work: (map #(map #(map * %1 %2) %1 %2) target signal)
It's not about nested maps, but about nested anonymous functions: if you nest anonimous functions you must use (fn [] ...) like:
(map (fn [t s] (map #(map * %1 %2) t s)) target signal) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
