julia> a = rand(10,10)
10×10 Array{Float64,2}:
 0.588313  0.696375   0.272158   0.604004   0.721866   0.788268   0.728738    0.320052   0.584744  0.865045
 0.98761   0.0869793  0.773938   0.91684    0.863999   0.943742   0.0580978   0.487495   0.961992  0.390288
 0.189591  0.62363    0.157625   0.954888   0.49841    0.941533   0.412334    0.78788    0.223935  0.829246
 0.337661  0.637544   0.348461   0.746178   0.192524   0.0180271  0.0591129   0.649086   0.658684  0.789615
 0.548669  0.858003   0.705537   0.838853   0.971037   0.0630057  0.0746857   0.202656   0.311941  0.680795
 0.443942  0.994116   0.0369483  0.655085   0.0806701  0.259669   0.537003    0.767103   0.886493  0.42927 
 0.450888  0.464264   0.76202    0.494407   0.618808   0.732945   0.311039    0.0803125  0.2154    0.236799
 0.510151  0.326896   0.0835976  0.25796    0.335705   0.646855   0.00134084  0.517298   0.395151  0.625445
 0.707753  0.982399   0.325194   0.0679382  0.311107   0.469233   0.830239    0.845385   0.649784  0.365174
 0.360456  0.680518   0.581434   0.7556     0.840826   0.99433    0.301829    0.275632   0.918035  0.932225

julia> median(a,1)
1×10 Array{Float64,2}:
 0.480519  0.659031  0.336828  0.700632  0.558609  0.6899  0.306434  0.502396  0.617264  0.65312

julia> a
10×10 Array{Float64,2}:
 0.189591  0.0869793  0.0369483  0.0679382  0.0806701  0.0180271  0.00134084  0.0803125  0.2154    0.236799
 0.337661  0.326896   0.0835976  0.25796    0.192524   0.0630057  0.0580978   0.202656   0.223935  0.365174
 0.360456  0.464264   0.157625   0.494407   0.311107   0.259669   0.0591129   0.275632   0.311941  0.390288
 0.443942  0.62363    0.272158   0.604004   0.335705   0.469233   0.0746857   0.320052   0.395151  0.42927 
 0.450888  0.637544   0.325194   0.655085   0.49841    0.646855   0.301829    0.487495   0.584744  0.625445
 0.510151  0.680518   0.348461   0.746178   0.618808   0.732945   0.311039    0.517298   0.649784  0.680795
 0.548669  0.696375   0.581434   0.7556     0.721866   0.788268   0.412334    0.649086   0.658684  0.789615
 0.588313  0.858003   0.705537   0.838853   0.840826   0.941533   0.537003    0.767103   0.886493  0.829246
 0.707753  0.982399   0.76202    0.91684    0.863999   0.943742   0.728738    0.78788    0.918035  0.865045
 0.98761   0.994116   0.773938   0.954888   0.971037   0.99433    0.830239    0.845385   0.961992  0.932225

Julia Version 0.5.0-dev+4956
Commit 861100c* (2016-06-27 16:47 UTC)
Platform Info:
  System: Darwin (x86_64-apple-darwin15.4.0)
  CPU: Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
  WORD_SIZE: 64
  BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Haswell)
  LAPACK: libopenblas64_
  LIBM: libopenlibm
  LLVM: libLLVM-3.7.1 (ORCJIT, broadwell)