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Re: reading an ascii file efficiently [message #68913 is a reply to message #68910]

Fri, 27 November 2009 11:02

natha
Messages: 482
Registered: October 2007

Senior Member

Hi all,

Thanks for your suggestions. Finally, the fastest read time for this
situation is the following one:

lines=FILE_LINES(file)
rr=STRARR(lines)
OPENR, lun, file, /GET_LUN
READF, lun, rr
FREE_LUN, lun

result=FLTARR(lines)
FOR i=0l, lines-1 DO BEGIN
str_arr=STRSPLIT(rr[i],',',/EXTRACT)
result[i]=FLOAT(str_arr[6])
ENDFOR

It's just 0.4 seconds faster than the previous solution. Thanks,
anyway

nata

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[Message index]

		Re: reading an ascii file efficiently By: jeanh on Mon, 30 November 2009 06:50
		Re: reading an ascii file efficiently By: natha on Mon, 30 November 2009 06:39
		Re: reading an ascii file efficiently By: David Fanning on Sat, 28 November 2009 11:00
		Re: reading an ascii file efficiently By: penteado on Fri, 27 November 2009 21:04
		Re: reading an ascii file efficiently By: David Fanning on Fri, 27 November 2009 20:56
		Re: reading an ascii file efficiently By: penteado on Fri, 27 November 2009 19:58
		Re: reading an ascii file efficiently By: Heinz Stege on Fri, 27 November 2009 19:27
		Re: reading an ascii file efficiently By: Heinz Stege on Fri, 27 November 2009 19:16
		Re: reading an ascii file efficiently By: penteado on Fri, 27 November 2009 14:45
		Re: reading an ascii file efficiently By: natha on Fri, 27 November 2009 11:02
		Re: reading an ascii file efficiently By: jeanh on Fri, 27 November 2009 10:39
		Re: reading an ascii file efficiently By: b_gom on Fri, 27 November 2009 10:34

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