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Re: String Data file [message #35861 is a reply to message #35859]

Wed, 30 July 2003 16:30

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

"Karthikayan Balakrishnan" wrote...

> I have a data file that looks like this:
> abc 1 2
> def 3 4.5
> ghij 2.3 23.44
> ...
> ...
> The first column is string, the next two are
> floating point. Is there any way I can read such a file?

You have a couple of options depending on how strict a format your data file
adheres to.

If your file has a strict format (which it doesn't look like it does) you
can use the FORMAT keyword to READF to specify exactly how your data is
read. For example:

OPENR, lun, 'yourfile.dat', /GET_LUN
while (not EOF(lun)) do begin
READF, lun, str, fl1, fl2, FORMAT='(a5,1x,f3.1,1x,f5.2)'
PRINT, str, fl1, fl2
endwhile
FREE_LUN, lun

would print your file to the screen, assuming your format was fixed.

If you don't have a strict format for your file, and it starts with a
string, then you'll need to read the entire line in as a string and parse
the line for your data. Something like this:

OPENR, lun, 'yourfile.dat', /GET_LUN
str = ''
while (not EOF(lun)) do begin
READF, lun, str
data = STRSPLIT(str, ' ', /EXTRACT)
str = data[0]
fl1 = FLOAT(data[1])
fl2 = FLOAT(data[2])
PRINT, str, fl1, fl2
endwhile
FREE_LUN, lun

Hope this helps!

-Rick

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[Message index]

		Re: String Data file By: R.Bauer on Thu, 31 July 2003 23:57
		Re: String Data file By: Pavel Romashkin on Thu, 31 July 2003 13:38
		Re: String Data file By: David Fanning on Thu, 31 July 2003 10:52
		Re: String Data file By: Justin[2] on Thu, 31 July 2003 10:46
		Re: String Data file By: R.Bauer on Thu, 31 July 2003 00:02
		Re: String Data file By: mperrin+news on Wed, 30 July 2003 21:26
		Re: String Data file By: andrew.cool on Wed, 30 July 2003 19:55
		Re: String Data file By: Rick Towler on Wed, 30 July 2003 16:30

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