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Full Discussion: Calculating weighted average
Top Forums UNIX for Dummies Questions & Answers Calculating weighted average Post 302536332 by ctsgnb on Tuesday 5th of July 2011 06:29:05 AM
Old 07-05-2011
Code:
awk '{s+=$1;++n}END{f="avg.dat";print s/n > f}' file1.dat

---------- Post updated at 12:26 PM ---------- Previous update was at 12:25 PM ----------

Code:
awk '{s+=$1;++n}END{f="avg.dat";print FILENAME": " s/n > f}' file1.dat

---------- Post updated at 12:29 PM ---------- Previous update was at 12:26 PM ----------

Code:
[ctsgnb@shell ~/sand]$ ls *.dat
file1.dat
[ctsgnb@shell ~/sand]$ cat file1.dat
1.3453
2.434
2.345
[ctsgnb@shell ~/sand]$ awk '{s+=$1;++n}END{f="avg.dat";print FILENAME": " s/n > f}' file1.dat
[ctsgnb@shell ~/sand]$ ls *.dat
avg.dat file1.dat
[ctsgnb@shell ~/sand]$ cat avg.dat
file1.dat: 2.04143

 

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LEARN ABOUT OPENDARWIN

load_datafile

load_datafile(3alleg4)						  Allegro manual					    load_datafile(3alleg4)

NAME

       load_datafile - Loads a datafile into memory. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       DATAFILE *load_datafile(const char *filename);

DESCRIPTION

       Loads  a datafile into memory in one go. If the datafile has been encrypted, you must first call packfile_password() to set the appropriate
       key. If the datafile contains truecolor graphics, you must set the video mode or call set_color_conversion() before loading it. Example:

	  /* Load the resources for our game. */
	  DATAFILE *dat = load_datafile("game.dat");
	  if (!dat)
	     abort_on_error("Couldn't load sound resources!");
	  /* Use resources. */
	  ...
	  /* Destroy them when we don't need them any more. */
	  unload_datafile(dat);

RETURN VALUE

       Returns a pointer to the DATAFILE, or NULL on error. Remember to free this DATAFILE later to avoid memory leaks.

SEE ALSO

       load_datafile_callback(3alleg4),       unload_datafile(3alleg4),       load_datafile_object(3alleg4),	    set_color_conversion(3alleg4),
       fixup_datafile(3alleg4),  packfile_password(3alleg4),  find_datafile_object(3alleg4), register_datafile_object(3alleg4), excustom(3alleg4),
       exdata(3alleg4), exexedat(3alleg4), exgui(3alleg4), exsprite(3alleg4), exunicod(3alleg4)

Allegro 							   version 4.4.2					    load_datafile(3alleg4)
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