09-11-2009
Thanks a lot!
Thanks a lot, Tyler! It works out perfectly with small matrix.
Yes, the memory is an issue for me with the 25000x25000 matrix. I will try to use other pc with more RAM. Thank you very much again!
---------- Post updated at 09:08 PM ---------- Previous update was at 08:58 PM ----------
The matrix is the correlation coefficiencies of the expression level of ~25000 genes of the genome. Some genes express similarly that can be indicated by high correlation coefficiency, but most of them not. The ID is used to track the gene name of the genome, and to find the pattern of expression.
Say, if I want see which genes are expressing similarly with 244901_AT, GREP it would give the single row of the correlation coefficiencies. Theoretically, the half matrix contains all the information of the square one, but it is hard for me to retrieve any specific gene(s) of my interest. By the way, I am a geneticist and just started trying programming.
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LEARN ABOUT DEBIAN
zlanht.f
zlanht.f(3) LAPACK zlanht.f(3)
NAME
zlanht.f -
SYNOPSIS
Functions/Subroutines
DOUBLE PRECISION function zlanht (NORM, N, D, E)
ZLANHT
Function/Subroutine Documentation
DOUBLE PRECISION function zlanht (characterNORM, integerN, double precision, dimension( * )D, complex*16, dimension( * )E)
ZLANHT
Purpose:
ZLANHT returns the value of the one norm, or the Frobenius norm, or
the infinity norm, or the element of largest absolute value of a
complex Hermitian tridiagonal matrix A.
Returns:
ZLANHT
ZLANHT = ( max(abs(A(i,j))), NORM = 'M' or 'm'
(
( norm1(A), NORM = '1', 'O' or 'o'
(
( normI(A), NORM = 'I' or 'i'
(
( normF(A), NORM = 'F', 'f', 'E' or 'e'
where norm1 denotes the one norm of a matrix (maximum column sum),
normI denotes the infinity norm of a matrix (maximum row sum) and
normF denotes the Frobenius norm of a matrix (square root of sum of
squares). Note that max(abs(A(i,j))) is not a consistent matrix norm.
Parameters:
NORM
NORM is CHARACTER*1
Specifies the value to be returned in ZLANHT as described
above.
N
N is INTEGER
The order of the matrix A. N >= 0. When N = 0, ZLANHT is
set to zero.
D
D is DOUBLE PRECISION array, dimension (N)
The diagonal elements of A.
E
E is COMPLEX*16 array, dimension (N-1)
The (n-1) sub-diagonal or super-diagonal elements of A.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 102 of file zlanht.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.1 Sun May 26 2013 zlanht.f(3)