I still can't figure it out. If have this set. a [2 4 6 7] b [1 3 9 2] c [2 4 5 6] d [6 1 3 8] e [4 8 2 1]
If I do (reduce min (map #(get % 0) (list a b c d e))) It grabs the min value from index 0 of the five vectors and returns 1 corresponding to 'b'. But I'm not sure how I would determine it's coming from 'b'. I need to know that it comes from 'b' in order to build the new vector. If I do (vec (map min a b c d e)) It grabs the min value from index (0, 1, 2, 3) and puts it in a vector [1 1 2 1] And I don't know from what vector the minimum value is coming from. The solution is probably already here but I can't think of it. Sorry. On Dec 2, 3:40 pm, Wilson MacGyver <wmacgy...@gmail.com> wrote: > assuming, vector a b c d e are already defined. > > I'd do > > user=> (map vector a b c d e) > ([2 1 2 6 4] [4 3 4 1 8] [6 9 5 3 2] [7 2 6 8 1]) > > you can then use the solutions provided from previous messages > to find the min value of each vector. > > so you then end up with > > [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1] > > at that point, you repeat the same trick > > (map vector [0 1 0 0 0] [0 0 0 1 0] [0 0 0 0 1] [0 0 0 0 1]) > > and that will give you > > [0 0 0 0] [1 0 0 0] [0 0 0 0] [0 1 0 0] [0 0 1 1] > > > > > > On Wed, Dec 2, 2009 at 6:22 PM, Don <josereyno...@gmail.com> wrote: > > Thank you Stefan and Kevin. Awesome solutions that answer my > > question. However I actually made a mistake in posing my question. > > Let me attempt to ask my question again. > > > I have 5 vectors as such: > > a [2 4 6 7] > > b [1 3 9 2] > > c [2 4 5 6] > > d [6 1 3 8] > > e [4 8 2 1] > > > and the output i want is this > > > a1 [0 0 0 0] > > b1 [1 0 0 0] > > c1 [0 0 0 0] > > d1 [0 1 0 0] > > e1 [0 0 1 1] > > > Now I'm not sure if it can be done in one swoop, or should be done in > > a loop. I was thinking a loop, but I'm having trouble thinking about > > it. > > > I initially thought of creating a function that takes in 5 vectors and > > returns a single vector. So the first time its called it would > > return a1 [0 0 0 0] then call it again and return b1 [1 0 0 0] etc... > > I know it will repeat calculations however I couldn't come up with > > anything else. > > > Thank you. > > > On Dec 2, 2:55 pm, Kevin Downey <redc...@gmail.com> wrote: > >> user=> (vec (map min [2 4 6 7] [1 3 9 2] [2 4 5 6] [6 1 3 8] [4 8 2 1])) > >> [1 1 2 1] > >> user=> > > >> On Wed, Dec 2, 2009 at 2:53 PM, Stefan Kamphausen > > >> <ska2...@googlemail.com> wrote: > >> > Hi, > > >> > On Dec 2, 11:43 pm, Don <josereyno...@gmail.com> wrote: > >> >> I am having difficulty approaching this problem. I'm not sure if it > >> >> can be done in one swoop, or requires a few steps. > > >> >> I have 5 vectors as such: > > >> >> a [2 4 6 7] > >> >> b [1 3 9 2] > >> >> c [2 4 5 6] > >> >> d [6 1 3 8] > >> >> e [4 8 2 1] > >> >> And I want to take the minimum value at a given index between the > >> >> vectors. Therefore, minimum value at index 0 would yield the value 1 > >> >> from vector b. > > >> > a quick shot would be > > >> > (reduce min (map #(get % 0) (list a b c d e))) > > >> > It would be nicer to have a vector of vectors or a list of vectors at > >> > the beginning, probably. > > >> > Cheers, > >> > Stefan > > >> > -- > >> > 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 > > >> -- > >> And what is good, Phaedrus, > >> And what is not good— > >> Need we ask anyone to tell us these things? > > > -- > > 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 > > -- > Omnem crede diem tibi diluxisse supremum. -- 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
