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Rearrange fields of delimited text file

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Top Forums Shell Programming and Scripting Rearrange fields of delimited text file
# 15  
Old 09-08-2017
Quote:
Originally Posted by andy2000
.
.
.
@RudiC: your solution doesn't work correctly:

1_ICD;11_ICD;15_ICD;3_ICD
a1;a11;a15;a3

Smilie
It does, on the sample data given. If you change the data's structure, you need to adapt the code as well. For you new data structure, don't use the second field for the sort key but the first.
# 16  
Old 09-08-2017
@rdrtx1: your solution doesn't work with more than 2 rows Smilie

a_13;a_2;a_1;a_10
13;2;1;10
23;22;11;100
Last edited by andy2000; 09-08-2017 at 10:18 AM..
# 17  
Old 09-08-2017
Quote:
Originally Posted by andy2000
@rdrtx1: your solution doesn't work with more than 2 rows Smilie

a_13;a_2;a_1;a_10
13;2;1;10
23,22,11,100

---------- Post updated at 05:13 AM ---------- Previous update was at 05:10 AM ----------

Sorry, all your solution doesn't work with more than 3 rows:

a_13;a_2;a_1;a_10
13;2;1;10
23,22,11,100
...

Smilie

Moderator's Comments:
Mod Comment DON'T edit the post after people were referring to it!



Methinks you better be utmost careful with your assertions and first check on your side. Any evidence that "solution doesn't work with more than 3 rows" on data compliant with the sample in post#1?
Last edited by RudiC; 09-09-2017 at 06:46 AM.. Reason: Quoted OP's original post after s/he twice edited his/her errors away despite request NOT to do so.
# 18  
Old 09-08-2017
Quote:
Originally Posted by andy2000
@rdrtx1: your solution doesn't work with more than 2 rows Smilie

a_13;a_2;a_1;a_10
13;2;1;10
23,22,11,100

---------- Post updated at 05:13 AM ---------- Previous update was at 05:10 AM ----------

Sorry, all your solution doesn't work with more than 3 rows:

a_13;a_2;a_1;a_10
13;2;1;10
23,22,11,100
...

Smilie
That's because you changed your delimiter character from ";" to "," (semi-colon to comma) in the last line of your data file.

If I keep the delimiter consistent for all the rows i.e. ";", then it does work:

Code:
$
$ cat data.txt
a_13;a_2;a_1;a_10
13;2;1;10
23,22,11,100
$
$ # Will not work because the last line cannot be split (as per the program's intention) on comma ","
$ perl -F';' -lane 'if ($. == 1){
                        %x = map{ $F[$_] => $_ } (0..$#F);
                        @s = map{ $x{$_} } sort { (split "_", $a)[1] <=> (split "_", $b)[1] } @F;
                    }
                    print join ";", map{ $F[$s[$_]] }(0..$#F);
                   ' data.txt
a_1;a_2;a_10;a_13
1;2;10;13
 
$
$ # After changing data.txt
$
$ cat data.txt
a_13;a_2;a_1;a_10
13;2;1;10
23;22;11;100
$
$ # Will work now because the delimiter is consistent for all rows
$
$ perl -F';' -lane 'if ($. == 1){
                        %x = map{ $F[$_] => $_ } (0..$#F);
                        @s = map{ $x{$_} } sort { (split "_", $a)[1] <=> (split "_", $b)[1] } @F;
                    }
                    print join ";", map{ $F[$s[$_]] }(0..$#F);
                   ' data.txt
a_1;a_2;a_10;a_13
1;2;10;13
11;22;100;23
$
$

Last edited by durden_tyler; 09-08-2017 at 09:38 AM..
# 19  
Old 09-08-2017
@durden_tyler: sorry... it works
# 20  
Old 09-09-2017
Andy200 - please do not edit your posts after someone answers. You can no longer post to this thread.

Thanks you for understanding that what you were doing is extremely unhelpful to the folks trying to help you. And, very importantly, confusing for anyone trying to learn from your problem. That includes the folks whose names appear in red, we learn, too. Which is why we like helping others.
These 6 Users Gave Thanks to jim mcnamara For This Post:
Corona688 Don Cragun drl durden_tyler RavinderSingh13 RudiC
# 21  
Old 09-12-2017
Moderator's Comments:
Mod Comment Posting "Does not work" without explanation does not help you or anyone. If a command does not work for you, please show the exact circumstances you used it, and the exact error or malfunction you received. Do not paraphrase errors, or post the text as links, images, or attachments if you can avoid it: Paste the exact message, in code tags, like [code] text [/code] or by selecting the text and using the Image button.

Thank you.

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