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Full Discussion: How to get min and max values using awk?
Top Forums Shell Programming and Scripting How to get min and max values using awk? Post 302911767 by Don Cragun on Saturday 2nd of August 2014 11:51:44 PM
Old 08-03-2014
Quote:
Originally Posted by redse171
Hi,

I need your kind help to get min and max values from file based on value in $5 .

File1
Code:
SP12.3	stc	2240806	2240808	+	ID1 N003	 ID2 N003T0
SP12.3	sto	2241682	2241684	+	ID1 N003	 ID2 N003T0
SP12.3	XE	2239943	2240011	+	ID1 N003	 ID2 N003T0
SP12.3	XE	2240077	2241254	+	ID1 N003	 ID2 N003T0
SP12.3	CD	2240806	2241254	+	ID1 N003	 ID2 N003T0
SP12.3	XE	2241471	2241684	+	ID1 N003	 ID2 N003T0
SP12.3	CD	2241471	2241681	+	ID1 N003	 ID2 N003T0
SP12.3	stc	2245127	2245129	+	ID1 N005	 ID2 N005T0
SP12.3	sto	2246954	2246956	+	ID1 N005	 ID2 N005T0
SP12.3	XE	2244762	2247195	+	ID1 N005	 ID2 N005T0
SP12.3	CD	2245127	2246953	+	ID1 N005	 ID2 N005T0
SP12.3	stc	2253115	2253117	-	ID1 N006	 ID2 N006T0
SP12.3	sto	2249759	2249761	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2253090	2254054	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2253090	2253117	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2252492	2252908	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2252492	2252908	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2251730	2251882	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2251730	2251882	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2251591	2251664	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2251591	2251664	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2249887	2251530	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2249887	2251530	-	ID1 N006	 ID2 N006T0
SP12.3	XE	2249087	2249821	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2249762	2249821	-	ID1 N006	 ID2 N006T0
SP12.3	stc	2252073	2252075	-	ID1 N006	 ID2 N006T1
SP12.3	sto	2249759	2249761	-	ID1 N006	 ID2 N006T1
SP12.3	XE	2252492	2252973	-	ID1 N006	 ID2 N006T1
SP12.3	XE	2251730	2252227	-	ID1 N006	 ID2 N006T1
SP12.3	CD	2251730	2252075	-	ID1 N006	 ID2 N006T1
SP12.3	XE	2251591	2251664	-	ID1 N006	 ID2 N006T1
SP12.3	CD	2251591	2251664	-	ID1 N006	 ID2 N006T1
SP12.3	XE	2249887	2251530	-	ID1 N006	 ID2 N006T1
SP12.3	CD	2249887	2251530	-	ID1 N006	 ID2 N006T1
SP12.3	XE	2249090	2249821	-	ID1 N006	 ID2 N006T1
SP12.3	CD	2249762	2249821	-	ID1 N006	 ID2 N006T1

I did the following codes:-

Code:
awk -F"\t" '$2=="CD"{if ($5~/\+/) {print $1"\t"$3"\t"$4"\t"$5"\t"$6"\t"$7} else {print $1"\t"$4"\t"$3"\t"$5"\t"$6"\t"$7}}' file1

But the results still shows all lines containing "CD" pattern. The real output that i want will only show min and max value based on $5 ((blue color for "+" and red color for "-") as below. :-

Code:
SP12.3	CD	2240806	2241681	+	ID1 N003	 ID2 N003T0
SP12.3	CD	2249762	2253117	-	ID1 N006	 ID2 N006T0
SP12.3	CD	2249762	2252075	-	ID1 N006	 ID2 N006T1

If there is only 1 CD for any ID2 ($7), the line will also be omitted. Would appreciate if you can help me on this. thanks
It is no wonder that the results you are getting are not what you want. Your description of how to process the input is so vague that we do not understand what you want.

The code you showed us prints parts of every line with "CD" in the 2nd field. For those lines, it throws away fields 2, 8, and 9; and, if $5 is "+", it swaps fields 3 and 4 before printing the remainder of the line. But, the output you say you want shows every field (keeping fields 2, 8, and 9). And if fields 3 and 4 have been swapped, it isn't obvious to me.

You mentioned ID2 ($7), but it looks like you are looking for the minimum $3 value and the maximum $4 value for each different value in field 9 (not field 7). And from the data shown, I don't see that the + or - in field 5 makes any difference at all.

You have shown us data where fields 1, 6, and 8 are all constants. You have said that $1 may change, but you haven't given any indication of how, or if, that should affect the output produced.

Please give us a clear English description of what you are trying to do and explain what the meaning is for each of the fields in your file.

Also, lots of gene data that we're asked to help with has huge files to process. If that is the case here as well, any details you can give us about the data may help speed up the process considerably. For example, what you have shown us could be sorted with field 1, 5, or 9 as a primary sort key. If data is to be grouped using field 9 as a key and the input is sorted on field 9, we can produce any needed output every time the contents of field 9 changes (as opposed to accumulating all of the input into memory and processing everything at the end).

We also need to know up front whether or not it is important that the output be in the same order as the input.

And, finally: just saying that the code you were given did't give you accurate results is useless information. Show us the output you got, the output you wanted, and explain why (based on your description of what you wanted) the output you got was wrong! Help us help you!
These 3 Users Gave Thanks to Don Cragun For This Post:
drl redse171 RudiC
 

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