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Top Forums UNIX for Dummies Questions & Answers How to calculate the percentage/fraction of each value in a row against the maximum row value? Post 302416125 by auburn on Sunday 25th of April 2010 04:08:39 AM
Old 04-25-2010
How to calculate the percentage/fraction of each value in a row against the maximum row value?

Hi,

For each row in a file, i would like to identify the maximum value and calculate the percentage/fraction of the max for other values in the row.
Then, I would like to print a copy of the file where values above a threshold are replaced with "1" and other values are left as "0".
In the example below, the threshold is >=0.25 (25%)

Any notes on commands much appreciated!

Thank you!!Smilie

input file:
9,0,30,0
0,50,100,20
0,10,0,0
10,100,0,50

## fraction of max value##
0.3,0,1,0
0,0.5,1,0.2
0,1,0,0
0.1,1,0,0.5

Therefore, request output (ony assign "1" if >=0.25):
1,0,1,0
0,1,1,0
0,1,0,0
0,1,0,1
 

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FBSQL_DATA_SEEK(3)							 1							FBSQL_DATA_SEEK(3)

fbsql_data_seek - Move internal result pointer

SYNOPSIS
bool fbsql_data_seek (resource $result, int $row_number) DESCRIPTION
Moves the internal row pointer of the FrontBase result associated with the specified result identifier to point to the specified row num- ber. The next call to fbsql_fetch_row(3) would return that row. PARAMETERS
o $ result -A result identifier returned by fbsql_query(3) or fbsql_db_query(3). o $row_number - The row number. Starts at 0. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
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