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Top Forums UNIX for Advanced & Expert Users How do I standardise an entire column? Post 302410446 by Medova on Tuesday 6th of April 2010 03:47:30 AM
Old 04-06-2010
How do I standardise an entire column?

I have a kind of a multi-step problem:
What I want to do is: To find the maximum value in the second column, divide the entire column with this value and multiply with a user defined variable (e.g. x=400). The result should be written to a new file.

I.e., find max value of column 2 and perform the operation:
"val. column 2"*x/max

Example file:

*KEYWORD
*INITIAL_TEMPERATURE_NODE
52000290 457.10728
52000291 457.60783
52000292 457.10728
52000300 442.74765
52000301 443.36406
. .
. .
. .

New file:
*KEYWORD
*INITIAL_TEMPERATURE_NODE
52000290 399,56246
52000291 400.00000
52000292 399,56246
. .
. .
. .

Any suggestions?
Thx a lot...
 

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DB2_FIELD_NUM(3)							 1							  DB2_FIELD_NUM(3)

db2_field_num - Returns the position of the named column in a result set

SYNOPSIS
int db2_field_num (resource $stmt, mixed $column) DESCRIPTION
Returns the position of the named column in a result set. PARAMETERS
o $stmt - Specifies a statement resource containing a result set. o $column - Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the column, or a string containing the name of the column. RETURN VALUES
Returns an integer containing the 0-indexed position of the named column in the result set. If the specified column does not exist in the result set, db2_field_num(3) returns FALSE. SEE ALSO
db2_field_display_size(3), db2_field_name(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3), db2_field_width(3). PHP Documentation Group DB2_FIELD_NUM(3)
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