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Re: TRICKY TASK USING AWK [message #92801 is a reply to message #92794]

Tue, 01 March 2016 19:36

wlandsman
Messages: 743
Registered: June 2000

Senior Member

READCOL does not care how many columns are in a file. Say a file "bigtable.dat' has 100 columns and we just want to read the 5th column. This would work.

IDL> readcol,'bigtable.dat',v5,f='x,x,x,x,f'

Unfortunately, one can't abbreviate the format as f = '4x,f' though this feature wouldn't be too hard to add.

On Tuesday, March 1, 2016 at 1:08:03 AM UTC-5, Sapna Mishra wrote:
Say If I have infinite number of columns And I want to read 100th column how would I do that, shall I need to give 100 parameters in Readcol?? This seems tough to me.

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[Message index]

		TRICKY TASK USING AWK By: Sapna Mishra on Fri, 26 February 2016 01:20
		Re: TRICKY TASK USING AWK By: dg86 on Fri, 26 February 2016 04:03
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Fri, 26 February 2016 06:55
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Fri, 26 February 2016 07:09
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 07:57
		Re: TRICKY TASK USING AWK By: Paul Van Delst[1] on Mon, 29 February 2016 08:07
		Re: TRICKY TASK USING AWK By: Heinz Stege on Mon, 29 February 2016 09:33
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 08:58
		Re: TRICKY TASK USING AWK By: wlandsman on Mon, 29 February 2016 09:44
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 22:08
		Re: TRICKY TASK USING AWK By: wlandsman on Tue, 01 March 2016 07:39
		Re: TRICKY TASK USING AWK By: wlandsman on Tue, 01 March 2016 19:36
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 22:12
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Tue, 01 March 2016 01:37
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Tue, 01 March 2016 01:50

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