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Top Forums Shell Programming and Scripting How to read n number of lines from a file Post 302395443 by varsha on Tuesday 16th of February 2010 05:40:05 AM
Old 02-16-2010
Hello frds!!!

I again need your help


I have a file let us name x which contains as follows
Code:
1    3     4    5   7
6    2     1    6   0 
2    4     9    7   1
0    4     5    7   0
6    0     7    0   0

In this above data i want to find max num for 2nd column after finding that it should print its respective row and my output should b displayed as another file.I can have so many columns and rows its for eg i 600 rows and 15 columns

I want my output as like below

Code:
max=4
respective rows=2    4     9    7   1


I think i have explained my question of my knowldge


waiting for ur help frdsSmilieSmilie


Thanks in advanceSmilieSmilieSmilie

Last edited by Franklin52; 02-16-2010 at 06:49 AM.. Reason: Please use code tags!
 

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CDBTRF - compute an LU factorization of a real m-by-n band matrix
A without using partial pivoting or row  interchanges  SUBROUTINE
CDBTRF( M, N, KL, KU, AB, LDAB, INFO )
    INTEGER INFO, KL, KU, LDAB, M, N
    COMPLEX  AB( LDAB, * ) Cdbtrf computes an LU factorization of
a real m-by-n band matrix A without using partial pivoting or row
interchanges.

This  is  the  blocked	version of the algorithm, calling Level 3
BLAS.

M
(input) INTEGER The number of rows of the matrix A. M >= 0. N (input) INTEGER The number of columns of the matrix A. N >;= 0. KL (input) INTEGER The number of subdiagonals within the band of A. KL >;= 0. KU (input) INTEGER The num- ber of superdiagonals within the band of A. KU >;= 0. AB (input/output) REAL array, dimension (LDAB,N) On entry, the ma- trix A in band storage, in rows KL+1 to 2*KL+KU+1; rows 1 to KL of the array need not be set. The j-th column of A is stored in the j-th column of the array AB as follows: AB(kl+ku+1+i-j,j) = A(i,j) for max(1,j-ku)<;=i<=min(m,j+kl) On exit, details of the factorization: U is stored as an upper triangular band matrix with KL+KU superdiagonals in rows 1 to KL+KU+1, and the multipliers used during the factorization are stored in rows KL+KU+2 to 2*KL+KU+1. See below for further de- tails. LDAB (input) INTEGER The leading dimension of the ar- ray AB. LDAB >;= 2*KL+KU+1. INFO (output) INTEGER = 0: suc- cessful exit < 0: if INFO = -i, the i-th argument had an illegal value > 0: if INFO = +i, U(i,i) is exactly zero. The factorization has been completed, but the factor U is exactly singular, and divi- sion by zero will occur if it is used to solve a system of equa- tions. The band storage scheme is illustrated by the following example, when M = N = 6, KL = 2, KU = 1: On entry: On exit: * a12 a23 a34 a45 a56 * u12 u23 u34 u45 u56 a11 a22 a33 a44 a55 a66 u11 u22 u33 u44 u55 u66 a21 a32 a43 a54 a65 * m21 m32 m43 m54 m65 * a31 a42 a53 a64 * * m31 m42 m53 m64 * * Array elements marked * are not used by the routine.
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