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Top Forums Shell Programming and Scripting calculating row-wise standard deviation using awk Post 302666009 by Corona688 on Tuesday 3rd of July 2012 01:57:00 PM
Old 07-03-2012
Are you sure your output there is right? I get your numbers for the first, but your second appears to have an extra zero in the middle.

Code:
awk '{ A=0; V=0; for(N=1; N<=NF; N++) A+=$N ; A/=NF ; for(N=1; N<=NF; N++) V+=(($N-A)*($N-A))/(NF-1); print sqrt(V) }' <<EOF
> 23 35 12 25 16 17 18 19 29 12
> 12 26 15 14 15 23 12 12 15 14
> EOF
7.4117
4.80278

$

This User Gave Thanks to Corona688 For This Post:
 

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INGRES_FETCH_ROW(3)							 1						       INGRES_FETCH_ROW(3)

ingres_fetch_row - Fetch a row of result into an enumerated array

SYNOPSIS
array ingres_fetch_row (resource $result) DESCRIPTION
ingres_fetch_row(3) returns an array that corresponds to the fetched row, or FALSE if there are no more rows. Each result column is stored in an array offset, starting at offset 1. Subsequent calls to ingres_fetch_row(3) return the next row in the result set, or FALSE if there are no more rows. By default, arrays created by ingres_fetch_row(3) start from position 1 and not 0 as with other DBMS extensions. The starting position can be adjusted to 0 using the configuration parameter ingres.array_index_start. Note Related Configurations See also the ingres.array_index_start, ingres.fetch_buffer_size and ingres.utf8 directives in Runtime Configuration. PARAMETERS
o $result - The query result identifier RETURN VALUES
Returns an array that corresponds to the fetched row, or FALSE if there are no more rows EXAMPLES
Example #1 Fetch a row of result into an enumerated array <?php $link = ingres_connect($database, $user, $password); $result = ingres_query($link, "select * from table"); while ($row = ingres_fetch_row($result)) { echo $row[1]; echo $row[2]; } ?> SEE ALSO
ingres_num_fields(3), ingres_query(3), ingres_fetch_array(3), ingres_fetch_assoc(3), ingres_fetch_object(3). PHP Documentation Group INGRES_FETCH_ROW(3)
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