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Full Discussion: Fill in missing Data
Top Forums Shell Programming and Scripting Fill in missing Data Post 302609933 by Corona688 on Tuesday 20th of March 2012 03:28:28 PM
Old 03-20-2012
Why not fill them in with zeroes?

Code:
$ awk -F"," -v OFS="," '{ for (N=2; N<=NF; N++) if (!$N || ($N==" ")) $N=0 } 1' data
Wed Feb 01 09:00:02 EST 2012,0,0,0.4,0.3,0,0.3,0,0.3,0,0.5,0,0.3,0,0,0.4,0.3,0
Wed Feb 01 09:00:11 EST 2012,0,0,0,0,0,0,0.2,0,0,0,0,0,0,0,0,0,0
Wed Feb 01 09:00:22 EST 2012,0.7,0.4,0.5,0.4,0.3,0.4,0,0.4,0.5,0.6,0.3,0.4,0,0.1,0.5,0.4,0
Wed Feb 01 09:00:42 EST 2012,0.9,1.0,0.6,0.5,0,0,0,0,0,0,0,0.5,0,0,0,0,0
Wed Feb 01 09:01:02 EST 2012,1.0,0.8,0,0,0,0.6,0,0,0,0,0,0.6,0,0,0,0,0
Wed Feb 01 09:01:22 EST 2012,0,0.7,0.7,0.6,0.5,0,0,0.5,0,0,0,0,0,0,0,0,0
Wed Feb 01 09:01:42 EST 2012,0.9,0.6,0.6,0.5,0,0,0,0.4,0.7,0.7,0.4,0.5,0,0,0.6,0.5,0
Wed Feb 01 09:02:02 EST 2012,0.8,0,0.5,0.4,0,0,0,1.1,0,0,0.3,0.4,0,0,0,0,0
Wed Feb 01 09:02:22 EST 2012,0.9,0,0,0,0,0,0,0.7,0,0.6,0,0,0,0,0,0,0

$

Or do you want the missing value to be filled in with data from last time? That'd make more sense than interpolating with data from other servers...

Code:
awk -F"," -v OFS="," '{ for (N=2; N<=NF; N++) if (!$N || ($N==" ")) { $N=D[N] } else { D[N]=$N } } 1' data
Wed Feb 01 09:00:02 EST 2012,,,0.4,0.3,,0.3,,0.3,,0.5,,0.3,,,0.4,0.3,
Wed Feb 01 09:00:11 EST 2012,,,0.4,0.3,,0.3,0.2,0.3,,0.5,,0.3,,,0.4,0.3,
Wed Feb 01 09:00:22 EST 2012,0.7,0.4,0.5,0.4,0.3,0.4,0.2,0.4,0.5,0.6,0.3,0.4,,0.1,0.5,0.4,
Wed Feb 01 09:00:42 EST 2012,0.9,1.0,0.6,0.5,0.3,0.4,0.2,0.4,0.5,0.6,0.3,0.5,,0.1,0.5,0.4,
Wed Feb 01 09:01:02 EST 2012,1.0,0.8,0.6,0.5,0.3,0.6,0.2,0.4,0.5,0.6,0.3,0.6,,0.1,0.5,0.4,
Wed Feb 01 09:01:22 EST 2012,1.0,0.7,0.7,0.6,0.5,0.6,0.2,0.5,0.5,0.6,0.3,0.6,,0.1,0.5,0.4,
Wed Feb 01 09:01:42 EST 2012,0.9,0.6,0.6,0.5,0.5,0.6,0.2,0.4,0.7,0.7,0.4,0.5,,0.1,0.6,0.5,
Wed Feb 01 09:02:02 EST 2012,0.8,0.6,0.5,0.4,0.5,0.6,0.2,1.1,0.7,0.7,0.3,0.4,,0.1,0.6,0.5,
Wed Feb 01 09:02:22 EST 2012,0.9,0.6,0.5,0.4,0.5,0.6,0.2,0.7,0.7,0.6,0.3,0.4,,0.1,0.6,0.5,

$


Last edited by Corona688; 03-20-2012 at 04:34 PM..
 

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PX_TIMESTAMP2STRING(3)					     Library Functions Manual					    PX_TIMESTAMP2STRING(3)

NAME
PX_timestamp2string -- Convert paradox timestamp into formated string SYNOPSIS
#include <paradox.h> char * PX_timestamp2string(pxdoc_t *pxdoc, double timestamp, const char *format) DESCRIPTION
Creates a string representation of a paradox timestamp as specified in the parameter format. The timestamp must be either retrieved with PX_get_data_double(3) after calling PX_get_record(3) or by simply using the double value in the pxval_t struct as returned by PX_retrieve_record(3). A timestamp contains both time and date information. The format string contains chars which stand for certain values of the date/time. The following table lists all available characters with a meaning. All other characters are being copied unmodified to the output string. If a special character shall not be interpreted it must be preceded with a backslash. Characters and their meaning in date/time format string Character Meaning Y year, numeric, 4 digits y year, numeric, 2 digits m month, numeric n month, numeric, no leading zeroes d day of the month, numeric j T{ day of the month, numeric, no leading zeros T} H hour, numeric, 24 hour format h hour, numeric, 12 hour format G T{ hour, numeric, 24 hour format, no leading zeroes T} g T{ hour, numeric, 12 hour format, no leading zeroes T} i minutes, numeric s seconds, numeric A AM/PM a am/pm L boolean for leap year RETURN VALUE
Returns pointer to string on success and NULL on failure. SEE ALSO
PX_time2string(3), PX_date2string(3) AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx. PX_TIMESTAMP2STRING(3)
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