Interface to Test Collections¶
Before downloading test matrices, it is recommended to first update the database:
julia> MatrixDepot.update()
Interface to the UF Sparse Matrix Collection¶
Use matrixdepot(NAME, :get), where NAME is collection name
+'/' + matrix name, to download a test matrix from the
UF Sparse Matrix Collection.
For example:
julia> matrixdepot("SNAP/web-Google", :get)
Note
matrixdepot() displays all the matrices in the
collection, including the newly downloaded matrices. All the matrix
data can be found by matrixdepot("data").
If the matrix name is unique in the collections, we could use
matrixdepot(matrix name, :get) to download the data. If more than
one matrix has the same name, a list of options will be returned. For
example:
julia> matrixdepot("epb0", :get)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 83244 100 83244 0 0 109k 0 --:--:-- --:--:-- --:--:-- 133k
download:/home/weijian/.julia/v0.4/MatrixDepot/data/uf/Averous/epb0.tar.gz
epb0/epb0.mtx
julia> matrixdepot("1138_bus", :get)
Try MatrixDepot.get(`name`), where `name` is one of the elements in the following Array:
2-element Array{AbstractString,1}:
"HB/1138_bus"
"Harwell-Boeing/psadmit/1138_bus"
When download is complete, we can check matrix information using:
julia> matrixdepot("SNAP/web-Google")
%%MatrixMarket matrix coordinate pattern general
%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/SNAP/web-Google
% name: SNAP/web-Google
% [Web graph from Google]
% id: 2301
% date: 2002
% author: Google
% ed: J. Leskovec
% fields: name title A id date author ed kind notes
% kind: directed graph
%-------------------------------------------------------------------------------
...
and generate it with the Symbol :r or :read
julia> matrixdepot("SNAP/web-Google", :r)
916428x916428 sparse matrix with 5105039 Float64 entries:
[11343 , 1] = 1.0
[11928 , 1] = 1.0
[15902 , 1] = 1.0
[29547 , 1] = 1.0
[30282 , 1] = 1.0
[31301 , 1] = 1.0
[38717 , 1] = 1.0
[43930 , 1] = 1.0
[46275 , 1] = 1.0
[48193 , 1] = 1.0
[50823 , 1] = 1.0
[56911 , 1] = 1.0
[62930 , 1] = 1.0
[68315 , 1] = 1.0
[71879 , 1] = 1.0
[72433 , 1] = 1.0
[73632 , 1] = 1.0
⋮
[532967, 916427] = 1.0
[547586, 916427] = 1.0
[557890, 916427] = 1.0
[571471, 916427] = 1.0
[580544, 916427] = 1.0
[608625, 916427] = 1.0
[618730, 916427] = 1.0
[622998, 916427] = 1.0
[673046, 916427] = 1.0
[716616, 916427] = 1.0
[720325, 916427] = 1.0
[772226, 916427] = 1.0
[785097, 916427] = 1.0
[788476, 916427] = 1.0
[822938, 916427] = 1.0
[833616, 916427] = 1.0
[417498, 916428] = 1.0
[843845, 916428] = 1.0
Interface to NIST Matrix Market¶
Use matrixdepot(NAME, :get), where NAME is
collection name + '/' + set name + '/' + matrix name to download a
test matrix from NIST Matrix Market:
http://math.nist.gov/MatrixMarket/. For example:
julia> matrixdepot("Harwell-Boeing/lanpro/nos5", :get)
If the matrix name is unique, we could also use matrixdepot(matrix name, :get):
julia> matrixdepot("bp__1400", :get)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 28192 100 28192 0 0 4665 0 0:00:06 0:00:06 --:--:-- 10004
download:/home/weijian/.julia/v0.4/MatrixDepot/data/mm/Harwell-Boeing/smtape/bp__1400.mtx.gz
Checking matrix information and generating matrix data are similar to the above case:
julia> matrixdepot("Harwell-Boeing/smtape/bp__1400")
%%MatrixMarket matrix coordinate real general
use matrixdepot("Harwell-Boeing/smtape/bp__1400", :read) to read the data
julia> matrixdepot("Harwell-Boeing/smtape/bp__1400", :read)
822x822 sparse matrix with 4790 Float64 entries:
[1 , 1] = 1.0
[1 , 2] = 0.001
[26 , 2] = -1.0
[1 , 3] = 0.6885
[25 , 3] = 0.9542
[692, 3] = 1.0
[718, 3] = 5.58
⋮
[202, 820] = -1.0
[776, 820] = 1.0
[1 , 821] = 0.4622
[25 , 821] = 0.725
[28 , 821] = 1.0
[202, 821] = -1.0
[796, 821] = 1.0
[2 , 822] = 1.0