repa-io-3.4.1.1: Read and write Repa arrays in various formats.

Data.Array.Repa.IO.Matrix

Description

Read and write matrices as ASCII text files.

The file format is like:

     MATRIX                  -- header
100 100                 -- width and height
1.23 1.56 1.23 ...      -- data, separated by whitespace
....


Synopsis

# Documentation

readMatrixFromTextFile :: (Num e, Read e, Unbox e) => FilePath -> IO (Array U DIM2 e) Source #

Read a matrix from a text file.

• WARNING: This is implemented fairly naively, just using Strings under the covers. It will be slow for large data files.
• It also doesn't do graceful error handling. If the file has the wrong format you'll get a confusing error.

writeMatrixToTextFile :: (Show e, Source r e) => FilePath -> Array r DIM2 e -> IO () Source #

Write a matrix as a text file.