Re: Importing Dos Data into Linux Mathematica?

*To*: mathgroup at smc.vnet.net*Subject*: [mg14479] Re: Importing Dos Data into Linux Mathematica?*From*: "P.J. Hinton" <paulh>*Date*: Fri, 23 Oct 1998 20:58:57 -0400*Organization*: "Wolfram Research, Inc."*References*: <70k4lr$enh@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

On 21 Oct 1998, Charles J. Koehler wrote: > I am having a problem in trying to import data files that are in > dos/ascii format. There is generally a header of 7 rows and 6 col. of > data. The columns are separated with commas. Each row of the data ends > with a ^M character. > > I am able to read in the first row of data but nothing more. I assume I > need to strip of the ^M that is attached to the last columns of data? > > Does anyone have experience with this? Your assistance would be > appreicated. Here is a Mathematica function that you can use to convert your files from DOS text to Unix format: DOSToUnix[filename_String] := Module[{stmpin, stmpout, nextbyte}, stmpin = OpenRead[filename]; stmpout = OpenTemporary[]; While[(nextbyte = Read[stmpin, Byte]) =!= EndOfFile, If[nextbyte != 13, WriteString[stmpout, FromCharacterCode[nextbyte]]]]; (DeleteFile[#[[2]]]; Apply[CopyFile, #]; DeleteFile[#[[1]]]) & [ (Close /@ {stmpout, stmpin})]] For larger files, you will probably want to use shell utility of some sort to do the job. Many Unix systems have a utility known as dos2unix that does the same job as the code above. If there isn't, you can get a copy of a similar utility known as d2u from the Sunsite archive mirrors. The main site is: ftp://sunsite.unc.edu/ but you should check the mirrors list to find a server closer to you. The file is in the directory /pub/linux/utils/text, and the archive is named d2u-1.3.tar.gz. The author of the software notes that the source code was written for Linux, but it should compile on any Unix compiler that supports ANSI C. -- P.J. Hinton Mathematica Programming Group paulh at wolfram.com Wolfram Research, Inc. http://www.wolfram.com/~paulh/ Disclaimer: Opinions expressed herein are those of the author alone.