Adding Column Values Using Pattern Match Post: 302784367

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Top Forums Shell Programming and Scripting Adding Column Values Using Pattern Match Post 302784367 by RudiC on Friday 22nd of March 2013 04:26:24 AM

03-22-2013

Registered User

Quote:

Originally Posted by angshuman

. . .
Hi Rudic,

Thank you for your reply. However, the output that you have showed is not what I am expecting

Let me explain a bit more. If you check the value in column 2, you will see that the values are like FILE1_MYFILE_20130309_1038, FILE1_MYFILE_20130309_1038, FILE1_dsc_dlk_MYFILE_20130309_1038. These are actually from the same group. The only difference is that there are some additional values between FILE1 and MYFILE. Hence I want to add all the corresponsing column 3 values. If this is not possible in awk, I was thinking if I remove the values between FILE1 and MYFILE first using awk and then add the values in column 3. What is your input on that and how do I remove those values?

Thanks and Regards
Angshuman

Hi Angshuman,

I figured that out and deleted my post, as it was irrelevant. In order to do what you want, we need to know what parts of the file names are to be retained, either by counting the subfields between separators (here: "_"), or by identifying static substrings (here: FILEn and MYFILE). If you can't give any hint on anchoring the to-be-deleted substring, things become difficult.

RudiC

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LEARN ABOUT SUNOS

mlib_imagestddev

mlib_ImageStdDev(3MLIB) 				    mediaLib Library Functions					   mlib_ImageStdDev(3MLIB)

NAME

       mlib_ImageStdDev - image standard deviation

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_ImageStdDev(mlib_d64 *sdev, const mlib_image *img, const mlib_d64 *mean);

DESCRIPTION

       The mlib_ImageStdDev() function computes the standard deviation for each channel in the source image.

       It uses the following equation:

		     1	   w-1 h-1
       sdev[i] = { ----- * SUM SUM (img[x][y][i] - mean[i])**2 }**0.5
		    w*h    x=0 y=0

       where, in the case of mean == NULL,

		   1	 w-1 h-1
       mean[i] = ----- * SUM SUM img[x][y][i]
		  w*h	 x=0 y=0

PARAMETERS

       The function takes the following arguments:

       sdev	       Pointer	to standard deviation array, whose size is the number of channels in the source image.	sdev[i] contains the stan-
		       dard deviation of channel i.

       img	       Pointer to input image.

       mean	       Pointer to pre-computed mean array for each channel.  (If NULL, it will be computed.)  mean[i] contains the mean of channel
		       i.

RETURN VALUES

       The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageMean(3MLIB), mlib_ImageMean_Fp(3MLIB), mlib_ImageStdDev_Fp(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 					   mlib_ImageStdDev(3MLIB)