From 1c1c0d2abfdf4e311c959a02e57e258257da8ca5 Mon Sep 17 00:00:00 2001 From: Alberto Ruiz Date: Fri, 5 Jun 2015 16:45:51 +0200 Subject: move io --- packages/base/src/Data/Packed/IO.hs | 166 ------------------------------------ 1 file changed, 166 deletions(-) delete mode 100644 packages/base/src/Data/Packed/IO.hs (limited to 'packages/base/src/Data/Packed') diff --git a/packages/base/src/Data/Packed/IO.hs b/packages/base/src/Data/Packed/IO.hs deleted file mode 100644 index b0999a8..0000000 --- a/packages/base/src/Data/Packed/IO.hs +++ /dev/null @@ -1,166 +0,0 @@ ------------------------------------------------------------------------------ --- | --- Module : Data.Packed.IO --- Copyright : (c) Alberto Ruiz 2010 --- License : BSD3 --- --- Maintainer : Alberto Ruiz --- Stability : provisional --- --- Display, formatting and IO functions for numeric 'Vector' and 'Matrix' --- ------------------------------------------------------------------------------ -{-# OPTIONS_HADDOCK hide #-} - -module Data.Packed.IO ( - dispf, disps, dispcf, vecdisp, latexFormat, format, - readMatrix, fromArray2D, loadMatrix, loadMatrix', saveMatrix -) where - -import Data.Packed -import Text.Printf(printf) -import Data.List(intersperse) -import Data.Complex -import Numeric.Vectorized(vectorScan,saveMatrix) -import Data.Packed.Internal - -{- | Creates a string from a matrix given a separator and a function to show each entry. Using -this function the user can easily define any desired display function: - -@import Text.Printf(printf)@ - -@disp = putStr . format \" \" (printf \"%.2f\")@ - --} -format :: (Element t) => String -> (t -> String) -> Matrix t -> String -format sep f m = table sep . map (map f) . toLists $ m - -{- | Show a matrix with \"autoscaling\" and a given number of decimal places. - ->>> putStr . disps 2 $ 120 * (3><4) [1..] -3x4 E3 - 0.12 0.24 0.36 0.48 - 0.60 0.72 0.84 0.96 - 1.08 1.20 1.32 1.44 - --} -disps :: Int -> Matrix Double -> String -disps d x = sdims x ++ " " ++ formatScaled d x - -{- | Show a matrix with a given number of decimal places. - ->>> dispf 2 (1/3 + ident 3) -"3x3\n1.33 0.33 0.33\n0.33 1.33 0.33\n0.33 0.33 1.33\n" - ->>> putStr . dispf 2 $ (3><4)[1,1.5..] -3x4 -1.00 1.50 2.00 2.50 -3.00 3.50 4.00 4.50 -5.00 5.50 6.00 6.50 - ->>> putStr . unlines . tail . lines . dispf 2 . asRow $ linspace 10 (0,1) -0.00 0.11 0.22 0.33 0.44 0.56 0.67 0.78 0.89 1.00 - --} -dispf :: Int -> Matrix Double -> String -dispf d x = sdims x ++ "\n" ++ formatFixed (if isInt x then 0 else d) x - -sdims x = show (rows x) ++ "x" ++ show (cols x) - -formatFixed d x = format " " (printf ("%."++show d++"f")) $ x - -isInt = all lookslikeInt . toList . flatten - -formatScaled dec t = "E"++show o++"\n" ++ ss - where ss = format " " (printf fmt. g) t - g x | o >= 0 = x/10^(o::Int) - | otherwise = x*10^(-o) - o | rows t == 0 || cols t == 0 = 0 - | otherwise = floor $ maximum $ map (logBase 10 . abs) $ toList $ flatten t - fmt = '%':show (dec+3) ++ '.':show dec ++"f" - -{- | Show a vector using a function for showing matrices. - ->>> putStr . vecdisp (dispf 2) $ linspace 10 (0,1) -10 |> 0.00 0.11 0.22 0.33 0.44 0.56 0.67 0.78 0.89 1.00 - --} -vecdisp :: (Element t) => (Matrix t -> String) -> Vector t -> String -vecdisp f v - = ((show (dim v) ++ " |> ") ++) . (++"\n") - . unwords . lines . tail . dropWhile (not . (`elem` " \n")) - . f . trans . reshape 1 - $ v - -{- | Tool to display matrices with latex syntax. - ->>> latexFormat "bmatrix" (dispf 2 $ ident 2) -"\\begin{bmatrix}\n1 & 0\n\\\\\n0 & 1\n\\end{bmatrix}" - --} -latexFormat :: String -- ^ type of braces: \"matrix\", \"bmatrix\", \"pmatrix\", etc. - -> String -- ^ Formatted matrix, with elements separated by spaces and newlines - -> String -latexFormat del tab = "\\begin{"++del++"}\n" ++ f tab ++ "\\end{"++del++"}" - where f = unlines . intersperse "\\\\" . map unwords . map (intersperse " & " . words) . tail . lines - --- | Pretty print a complex number with at most n decimal digits. -showComplex :: Int -> Complex Double -> String -showComplex d (a:+b) - | isZero a && isZero b = "0" - | isZero b = sa - | isZero a && isOne b = s2++"i" - | isZero a = sb++"i" - | isOne b = sa++s3++"i" - | otherwise = sa++s1++sb++"i" - where - sa = shcr d a - sb = shcr d b - s1 = if b<0 then "" else "+" - s2 = if b<0 then "-" else "" - s3 = if b<0 then "-" else "+" - -shcr d a | lookslikeInt a = printf "%.0f" a - | otherwise = printf ("%."++show d++"f") a - - -lookslikeInt x = show (round x :: Int) ++".0" == shx || "-0.0" == shx - where shx = show x - -isZero x = show x `elem` ["0.0","-0.0"] -isOne x = show x `elem` ["1.0","-1.0"] - --- | Pretty print a complex matrix with at most n decimal digits. -dispcf :: Int -> Matrix (Complex Double) -> String -dispcf d m = sdims m ++ "\n" ++ format " " (showComplex d) m - --------------------------------------------------------------------- - --- | reads a matrix from a string containing a table of numbers. -readMatrix :: String -> Matrix Double -readMatrix = fromLists . map (map read). map words . filter (not.null) . lines - --------------------------------------------------------------------------------- - -apparentCols :: FilePath -> IO Int -apparentCols s = f . dropWhile null . map words . lines <$> readFile s - where - f [] = 0 - f (x:_) = length x - - --- | load a matrix from an ASCII file formatted as a 2D table. -loadMatrix :: FilePath -> IO (Matrix Double) -loadMatrix f = do - v <- vectorScan f - c <- apparentCols f - if (dim v `mod` c /= 0) - then - error $ printf "loadMatrix: %d elements and %d columns in file %s" - (dim v) c f - else - return (reshape c v) - - -loadMatrix' name = mbCatch (loadMatrix name) - -- cgit v1.2.3