08-17-2009
a dummy question on data processing
Hi, everyone,
I have a matrix, let's say:
1 2 3 4 5 6 ...
4 5 6 7 8 9 ...
7 8 9 1 2 3 ...
3 4 5 6 7 8 ...
.........
(
nx
m matrix)
Is there a simple command that can take certain specific rows out of the matrix?
e.g., I want to take row 2 (4 5 6 7 8 9 ...) and row 4 (3 4 5 6 7 8 ...) out and put them into another file. I failed to do that with "grep". Do y'all have any idea ? Thanks.
Also, how to remove certain specific rows from the original file? (I know cut works if I want to remove columns, but how about rows??) Thanks a lot.
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LEARN ABOUT CENTOS
clacrm
clacrm.f(3) LAPACK clacrm.f(3)
NAME
clacrm.f -
SYNOPSIS
Functions/Subroutines
subroutine clacrm (M, N, A, LDA, B, LDB, C, LDC, RWORK)
CLACRM multiplies a complex matrix by a square real matrix.
Function/Subroutine Documentation
subroutine clacrm (integerM, integerN, complex, dimension( lda, * )A, integerLDA, real, dimension( ldb, * )B, integerLDB, complex, dimension(
ldc, * )C, integerLDC, real, dimension( * )RWORK)
CLACRM multiplies a complex matrix by a square real matrix.
Purpose:
CLACRM performs a very simple matrix-matrix multiplication:
C := A * B,
where A is M by N and complex; B is N by N and real;
C is M by N and complex.
Parameters:
M
M is INTEGER
The number of rows of the matrix A and of the matrix C.
M >= 0.
N
N is INTEGER
The number of columns and rows of the matrix B and
the number of columns of the matrix C.
N >= 0.
A
A is COMPLEX array, dimension (LDA, N)
A contains the M by N matrix A.
LDA
LDA is INTEGER
The leading dimension of the array A. LDA >=max(1,M).
B
B is REAL array, dimension (LDB, N)
B contains the N by N matrix B.
LDB
LDB is INTEGER
The leading dimension of the array B. LDB >=max(1,N).
C
C is COMPLEX array, dimension (LDC, N)
C contains the M by N matrix C.
LDC
LDC is INTEGER
The leading dimension of the array C. LDC >=max(1,N).
RWORK
RWORK is REAL array, dimension (2*M*N)
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 115 of file clacrm.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 clacrm.f(3)