[GHC] #8712: Data.Ix missing info on row/column major indexing

[GHC]

#8712: Data.Ix missing info on row/column major indexing
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        Reporter:  mirpa             |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  libraries/base    |          Version:  7.6.3
      Resolution:                    |         Keywords:  row, column,
Operating System:  Unknown/Multiple  |  major, Ix
 Type of failure:  Documentation     |     Architecture:  Unknown/Multiple
  bug                                |       Difficulty:  Easy (less than 1
       Test Case:                    |  hour)
        Blocking:                    |       Blocked By:
                                     |  Related Tickets:
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Comment (by mirpa):

 Thank you for recommendations on libraries. I've heard about Repa.

 For info: I use {{{FreeType}}} binding to render monochromatic glyphs
 which gives me {{{ByteString}}} with rows-width-pitch. I convert
 {{{ByteString}}} into {{{Data.Vector}}} for some number crunching
 (filtering) and save it as grey scale image with {{{JuicyPixels}}}.
 {{{Data.Ix}}} is used to address {{{Vector}}} as 2D array.

 It took me a while before I figured out why there is tearing and/or
 rotation in my image. I think that appropriate note in documentation could
 give a vital clue.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8712#comment:3>
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