comp.lang.idl-pvwave archive: archive » Re: how to find number of lines in an ASCII file?

Home » Public Forums » archive » Re: how to find number of lines in an ASCII file?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: how to find number of lines in an ASCII file? [message #12549 is a reply to message #12536]

Wed, 19 August 1998 00:00

Martin Schultz
Messages: 515
Registered: August 1997

Senior Member

Jason Li wrote:
>
> Hi,
>
> I have an ASCII text file that contains data in a nice tabular form,
>
> 0 28660 1827.1 72.7705 -158.8828 3388.0 22.3846 10.8545
> 1 28661 1827.7 72.7701 -158.8752 3391.0 21.1213 10.6029
> 2 28662 1828.3 72.7698 -158.8677 3394.0 19.8743 10.3546
> .
> .
> .
>
> I want to read them all and save into an array: data[8, numberOfLines]. But
> I don't know numberOfLines in the file before hand. What is the most efficient
> way to find that out?
>
> On UNIX, I can pass number of lines information back from wc command. Of
> course the same code won't work a on Mac. Please help.
>
> many thanks
>
> --

May not be the most efficient, but works pretty safe: you could try my
READDATA.PRO which you can find on the web site
http://www-as.harvard.edu/people/staff/mgs/idl/

This is designed especially for files like yours and also contains some
error checking, generality, etc.

Regards,
Martin.

--
------------------------------------------------------------ -------
Dr. Martin Schultz
Department for Earth&Planetary Sciences, Harvard University
109 Pierce Hall, 29 Oxford St., Cambridge, MA-02138, USA

phone: (617)-496-8318
fax : (617)-495-4551

e-mail: mgs@io.harvard.edu
Internet-homepage: http://www-as.harvard.edu/people/staff/mgs/
------------------------------------------------------------ -------

Report message to a moderator

[Message index]

		Re: how to find number of lines in an ASCII file? By: Paul Krummel on Fri, 21 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: Martin Schultz on Thu, 20 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: mallors on Thu, 20 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: Paul Krummel on Thu, 20 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: Martin Schultz on Wed, 19 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: Kevin Ivory on Wed, 19 August 1998 00:00
		Re: how to find number of lines in an ASCII file? By: meron on Wed, 19 August 1998 00:00

Previous Topic:	general ASCII table import (was: how to find number of lines in an ASCII file?)
Next Topic:	basic image processing library?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 19:33:36 PDT 2025

Total time taken to generate the page: 0.00428 seconds