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Full Discussion: Split a file based on number sum at the second column and the third column.
Top Forums UNIX for Beginners Questions & Answers Split a file based on number sum at the second column and the third column. Post 303044726 by Chubler_XL on Monday 2nd of March 2020 02:51:56 PM
Old 03-02-2020
Sorry about my delay in gettng back think timezone differences are involved here. looks like we have some nice solutions coming together in this thread now.

This is the pseudo code I had in mind when I first read your requirements:
Code:
set startnum=0
set fileext = 1
loop:
    read line from input
    if column#3 - startnum > 2999 then
        startnum = column#2
        fileext = fileext + 1
    endif
    append line to filename("file" + fileext)
end loop

And the awk coded solution:
Code:
awk '
BEGIN { start=0 ; filenum=1 }
!start { start=$2 }
($3 - start) > 2999 {
   close("file" filenum)
   filenum++
   start=$2
}
{ print > "file" filenum }' infile

This is very similar to RudiC's proposal. The main difference being in the close statement. awk has a limited number of output buffers and using close will become necessary when dealing with a larger input files which can generate too many output files.

And in the spirit of this site this reduced solution could be derived from above:

Code:
awk '
!start || ($3 - start) > 2999 {
   close("file" filenum++)
   start=$2
}
{ print > "file" filenum }' infile

Last edited by Chubler_XL; 03-02-2020 at 04:09 PM..
This User Gave Thanks to Chubler_XL For This Post:
nezabudka
 

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LEARN ABOUT OSF1

dxmsvngetentryposition

DXmSvnGetEntryPosition(3X)												DXmSvnGetEntryPosition(3X)

NAME

       DXmSvnGetEntryPosition - Retrieves (returns) the position of an entry in the display.

SYNOPSIS

       void DXmSvnGetEntryPosition(
	       Widget widget,
	       int entry,
	       Boolean mode,
	       int *x,
	       int *y );

PARAMETERS

       The  identifier	(widget  ID)  of  the  SVN  widget.   An integer that represents the number of the entry for which position information is
       required.  A Boolean value that, when True, specifies that position information returned is relative to the upper-left corner  of  the  SVN
       window.	 When  False,  the  position  information returned is internal SVN information only (for column and outline mode) or indicates the
       position of the entry in the entire tree (tree mode).  A pointer to the x position in the tree.	A pointer to the y position in the tree.

DESCRIPTION

       The DXmSvnGetEntryPosition routine allows an application to determine the position of entries. The routine interprets the x and	y  coordi-
       nates differently, depending on the application's mode: Outline and Column mode

	      When  the  application is in outline or column mode (the DXMSvnNdisplayMode resource has been set to either DXMSvnKdisplayOutline or
	      DXMSvnKdisplayColumn) and mode for the DXmSvnGetEntryPosition routine has been set to True, the x and  y	coordinates  indicate,	in
	      pixels, the distance of the displayed entry from the upper-left corner of the SVN window.

	      However,	if  the  specified  entry is not visible in the SVN window, the routine returns -1 (an invalid value) for both the x and y
	      coordinates, because the SVN widget cannot determine the position of such an entry when the application  is  in  outline	or  column
	      mode.

	      When mode is False, the values returned for the x and y coordinates are only meaningful internally to the SVN widget.  Tree mode

	      When  the  application  is  in  tree  mode  (the	DXMSvnNdisplayMode resource is set to DXMSvnKdisplayTree) and the DXMSvnNtreeStyle
	      resource is set to DXMSvnKuserDefinedTree (the application controls the format), the x and y coordinates indicate,  in  pixels,  the
	      distance of the displayed entry from the upper-left corner of the SVN window, when mode is True.

	      If  the entry is not visible in the SVN window, the mode is False.  However, in tree mode, the returned x and y coordinates indicate
	      the position of the entry in the entire tree, even though that position extends beyond the limit of what can currently be  displayed
	      in the SVN window.

	      Note  that  for  position values to be valid, the SVN widget must have been enabled prior to any changes made to the contents of the
	      display.

															DXmSvnGetEntryPosition(3X)
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