Delete all rows with a specific content occuring in a specific column

Markus Ruhsam

Hello,

I can’t work out how to delete rows which have a specific content in a specific column. In the example below I’d like to delete all rows which have a ‘.’ in column 5, so that after the deletion I would only have the rows with ‘T’ and ‘A’ in it. Can anybody help?

Thank you

Markus

32 18 . G T 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,0,10 1/1:0,0,12,0 ./.:0,0,0,0 0/0:0,0,0,13 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 19 . G . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,0,10 0/0:0,0,0,12 ./.:0,0,0,0 0/0:0,0,0,13 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 20 . C . 13 PASS NS=4;DP=41 GT:CATG 0/0:10,0,0,0 0/0:12,0,0,0 ./.:0,0,0,0 0/0:13,0,0,0 0/0:6,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 21 . C . 13 PASS NS=4;DP=41 GT:CATG 0/0:10,0,0,0 0/0:12,0,0,0 ./.:0,0,0,0 0/0:13,0,0,0 0/0:6,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 22 . A . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,10,0,0 0/0:0,12,0,0 ./.:0,0,0,0 0/0:0,13,0,0 0/0:0,6,0,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 23 . T . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,10,0 0/0:0,0,12,0 ./.:0,0,0,0 0/0:0,0,13,0 0/0:0,0,6,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 24 . G . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,0,10 0/0:0,0,0,12 ./.:0,0,0,0 0/0:0,0,0,13 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 25 . C . 13 PASS NS=4;DP=41 GT:CATG 0/0:10,0,0,0 0/0:12,0,0,0 ./.:0,0,0,0 0/0:13,0,0,0 0/0:6,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 26 . G A 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,0,10 0/0:0,0,0,12 ./.:0,0,0,0 0/1:0,5,0,8 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 27 . G . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,0,10 0/0:0,0,0,12 ./.:0,0,0,0 0/0:0,0,0,13 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 28 . G A 13 PASS NS=4;DP=41 GT:CATG 0/1:0,5,0,5 0/0:0,0,0,12 ./.:0,0,0,0 0/0:0,0,0,13 0/0:0,0,0,6 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0
32 29 . T . 13 PASS NS=4;DP=41 GT:CATG 0/0:0,0,10,0 0/0:0,0,12,0 ./.:0,0,0,0 0/0:0,0,13,0 0/0:0,0,6,0 ./.:0,0,0,0 ./.:0,0,0,0 ./.:0,0,0,0

Jim Dailey

@Markus-Ruhsam

Perhaps you could search for something like this:

^([^ ]+ ){4}\. .*\R

and replace it with nothing?

The search begins at the start of a line (^) and is for 4 occurrences ({4}) of 1 or more non-blanks ([^ ]+) followed by a blank ( ) followed by a period and space (\. ) followed by any other characters (.*) up to the end of the line, including the newline character(s) (\R).

If the replace box is empty, the lines matching the search will be deleted.

Markus Ruhsam

This did not quite work but adjusting the search string to (^\d+\t\d+\t.\t\w\t…*\n) did. Thanks for that!

guy038

Hello, Markus-Ruhsam,

Of course, it’s a bit late, by now, but here is a shorter regex, that works perfectly well !

SEARCH (?-s)^(?=.{10}\.).+\R

REPLACE EMPTY

Et voilà !

Notes :

The first part (?-s) is an in-line modifier, which ensures that the dot meta-character will match only standard characters, even if you previously checked the . matches newline option
From the beginning of line ^, the form (?=.{10}\.), also called a positive look-ahead, verifies if the condition Does exist a DOT character, in column 11, of the current line, is true.
The important thing to remember about look-arounds is that, as soon as the condition is evaluated, the regex engine position is reset to the position before evaluating the look-around condition. So, in our case, to the position just before the first character of each line
Consequently, if this condition is true, the following part of the regex .+ matches all the standard characters of the current line
Finally, the \R syntax matches any kind of EOL characters ( \r\n ) in Windows files, ( \n ) in Unix files or ( \r ) in Mac files
Now, as the replacement string is empty, that means that any complete line ( with a dot character at column 11 ) will be, automatically, deleted !

Best Regards,

guy038