Could you possibly put up a minimal example of code that shows the problem? I'm having a hard time following exactly what you're doing but would like to help. :)
sincerely, --Robert McIntyre On Fri, Feb 4, 2011 at 10:20 AM, Nick <npatric...@gmail.com> wrote: > I've got a matrix transformation that I'm doing which is really slow. > I'm looking for ways to speed it up. > > source is a NxD matrix (seqs of seqs of values). I will set and read > this matrix. > dest is a NxN transformation of f in which indices are mapped to > specific indices of f. I will only read this matrix, not set it. > > If I place a value in one cell of source, it may show up in 30 other > places in dest due to a mapping function. I then use dest for some > simple matrix operations. The mapping that I use is generated once, > however it has to be applied to the source very frequently. > > Is there any way I could define dest with memory locations that > correspond to the mapped locations of source? This would allow me to > define the mapping once. Subsequently I could simply set source and > read dest with the changes already propagated. > > I've thought about using seqs of seqs of refs in source, then > assigning those same refs to the mapped locations of dest, but I'm not > sure if there is some other overhead hit I would take from setting and > reading the refs. > > What is the right solution? > > -- > 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 -- 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
