The matrix-market-attoparsec package

[Tags:bsd2, library, test]

Parsing and serialization functions for the NIST Matrix Market format.


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Properties

Versions 0.1.0.0, 0.1.0.1, 0.1.0.2, 0.1.0.3, 0.1.0.4, 0.1.0.5, 0.1.0.6, 0.1.0.7, 0.1.0.8
Change log CHANGELOG.markdown
Dependencies attoparsec (>=0.10), base (>=4.7 && <5), bytestring (>=0.9), exceptions, scientific (>=0.3.3.8) [details]
License BSD2
Copyright 2017 Marco Zocca
Author Marco Zocca
Maintainer zocca marco gmail
Category Parsers
Home page https://github.com/ocramz/matrix-market-attoparsec
Source repository head: git clone https://github.com/ocramz/matrix-market-attoparsec
Uploaded Sun Jun 18 20:24:22 UTC 2017 by ocramz
Distributions LTSHaskell:0.1.0.8, NixOS:0.1.0.8, Stackage:0.1.0.8, Tumbleweed:0.1.0.7
Downloads 298 total (43 in the last 30 days)
Votes
1 []
Status Docs available [build log]
Last success reported on 2017-06-18 [all 1 reports]
Hackage Matrix CI

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Readme for matrix-market-attoparsec

Readme for matrix-market-attoparsec-0.1.0.8

matrix-market-attoparsec

Build Status

Attoparsec parser for the NIST Matrix Market format [0].

The library also contains functions for serializing matrix data to text file.

User guide

The module Data.Matrix.MatrixMarket exports the user interface:

readMatrix :: FilePath -> IO (Matrix S.Scientific)

readArray :: FilePath -> IO (Array S.Scientific)

writeMatrix :: Show a => FilePath -> Matrix a -> IO ()

writeArray :: Show a => FilePath -> Array a -> IO ()  

The first two functions contain the parsing logic, and make use of scientific for parsing numerical data in scientific notation.

Naming convention

We follow the MatrixMarket format definitions, by which a "Matrix" is sparse and stored in coordinate format (row, column, entry), whereas an "Array" is a dense grid of numbers, stored in column-oriented form. Algebraic vectors, such as the right-hand sides of equation systems, are stored as n-by-1 Arrays.

Testing

test/LibSpec.hs contains a simple read/write/read sanity test for the included Matrix Marked data files (fidapm05.mtx and fidapm05_rhs1.mtx):

m0 <- readMatrix fname   -- load original
writeMatrix ftemp m0     -- save as temp
m1 <- readMatrix ftemp   -- load temp
m0 `shouldBe` m1         -- compare temp with original

References

[0] http://math.nist.gov/MatrixMarket/