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Re: Fast editing of text file? [message #44488 is a reply to message #44477]

Wed, 15 June 2005 00:55

marc schellens[1]
Messages: 183
Registered: January 2000

Senior Member

As you describe it you always use the same file for your fortran
program.

Find out the file position of the 12th line (read or write it till
then,
then use GET_LUN)

When you open it again you use after opening POINT_LUN.
Then you write your 12th line (and all following lines - see below for
options).

You don't need to write the following lines, if your fortran program
can handle trailing (leading) spaces. In that case write the file the
first time with
the maximum possible line length.

Then use POINT_LUN and write a string (preceded) padded with as many '
' as
needed to fill up to the maximum line length.

Or if your fortran program cannot handle spaces format all numbers to
the maximum possible amount of digits.
(ie. write 1.100000 instead of 1.1, etc (use the FORMAT keyword to
write))

If this isn't possible either read the trailing strings once into a
string array and
write this out.
WRITE,lun,strarr

Cheers,
marc

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[Message index]

		Re: Fast editing of text file? By: R.Bauer on Sun, 19 June 2005 01:12
		Re: Fast editing of text file? By: Craig Markwardt on Thu, 16 June 2005 07:51
		Re: Fast editing of text file? By: Michael Wallace on Thu, 16 June 2005 01:05
		Re: Fast editing of text file? By: Mark Hadfield on Wed, 15 June 2005 20:28
		Re: Fast editing of text file? By: Andrew Cool on Wed, 15 June 2005 19:55
		Re: Fast editing of text file? By: marc schellens[1] on Wed, 15 June 2005 00:55
		Re: Fast editing of text file? By: Michael Wallace on Tue, 14 June 2005 21:22
		Re: Fast editing of text file? By: t_314159 on Tue, 14 June 2005 17:15
		Re: Fast editing of text file? By: Michael Wallace on Tue, 14 June 2005 16:26

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