Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: how to quickly read a >10MB big file

  • To: mathgroup at smc.vnet.net
  • Subject: [mg72825] Re: how to quickly read a >10MB big file
  • From: Bill Rowe <readnewsciv at sbcglobal.net>
  • Date: Sun, 21 Jan 2007 05:49:42 -0500 (EST)

On 1/20/07 at 3:44 AM, p.wholey at gmail.com (P.Wholey) wrote:

>Hello, Friends: It is a file which has nearly 100,000 data lines. The
>file size is >10MB. Using mathematica 5, it takes over 30 mins to read
>the data in; but using fortran, it takes only several secs. Does anyone
>has a good idea to read such a file quickly.

For anyone to be of any real help, you need to provide some 
details about how the file is structured and what you are doing 
to read it in with Mathematica.

Mathematica is capable of reading large files in reasonable 
times. For example, using Mathematica 5.2 on a Mac with a 1.6 
GHz processor, I am able to read a file of 1.3 million lines (80 
MB) in ~20 seconds.
--
To reply via email subtract one hundred and four


  • Prev by Date: Newbie question - saving file in command-line
  • Next by Date: Re: Better recursive method?
  • Previous by thread: RE: Re: how to quickly read a >10MB big file
  • Next by thread: Re: how to quickly read a >10MB big file