The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Number of line in a text file
Replies: 12   Last Post: Jan 23, 2013 1:51 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 138
Registered: 1/30/06
Re: Number of line in a text file
Posted: Nov 2, 2006 10:51 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Benoît Valley wrote:
> And what are the commands to break the file in parts before reading
> it ?
> Thanks for your useful suggestion and help.
> Benoît
> Kirill wrote:

> >
> >
> > You will need to read it anyway so the only resort is to reduce
> > function call overhead: reading it by bug chunks, 10th or 100ths
> > megabytes, will be much faster.
> > Kirill
> >
> > Benoît Valley wrote:

> >> I need to determine the number of line in a text file.
> >>
> >> Is there a more efficient way that using getl in a while loop ?
> >>
> >> Thanks,
> >> Benoît

> >
> >

No need to break it up. If the file fits in memory, the following will
render you the number of lines:


This works on a PC or UNIX textfile. Guess you have to replace '10' for
'13' on a MAC.

If the file is huge, modify it to read in chunks.


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.