01-20-2010
Cut and paste data in matrix form
I have large formatted data file with five columns. This has to be rearranged in lower order matrix form as shown below for sample data.
1 2 3 4 5
1.0
3.0 2.0
5.0 3.0 2.0
4.0 3.0 1.0 6.0
2.0 3.0 4.0 5.0 1.0
1.0 4.0 2.0 3.0 5.0
3.0 5.0 4.0 2.0 8.0
1.0 3.0 2.0 4.0 5.0
2.0 1.0 3.0 7.0 8.0
6 7 8 9
1.0
3.0 5.0
1.0 3.0 2.0
2.0 3.0 4.0 5.0
1 2 3 4 5 6 7 8 9
1.0
3.0 2.0
5.0 3.0 2.0
4.0 3.0 1.0 6.0
2.0 3.0 4.0 5.0 1.0
1.0 4.0 2.0 3.0 5.0 1.0
3.0 5.0 4.0 2.0 8.0 3.0 5.0
1.0 3.0 2.0 4.0 5.0 1.0 3.0 2.0
2.0 1.0 3.0 7.0 8.0 2.0 3.0 4.0 5.0
Thanks in advance,
Dhilip
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LEARN ABOUT CENTOS
strttf.f
strttf.f(3) LAPACK strttf.f(3)
NAME
strttf.f -
SYNOPSIS
Functions/Subroutines
subroutine strttf (TRANSR, UPLO, N, A, LDA, ARF, INFO)
STRTTF copies a triangular matrix from the standard full format (TR) to the rectangular full packed format (TF).
Function/Subroutine Documentation
subroutine strttf (characterTRANSR, characterUPLO, integerN, real, dimension( 0: lda-1, 0: * )A, integerLDA, real, dimension( 0: * )ARF,
integerINFO)
STRTTF copies a triangular matrix from the standard full format (TR) to the rectangular full packed format (TF).
Purpose:
STRTTF copies a triangular matrix A from standard full format (TR)
to rectangular full packed format (TF) .
Parameters:
TRANSR
TRANSR is CHARACTER*1
= 'N': ARF in Normal form is wanted;
= 'T': ARF in Transpose form is wanted.
UPLO
UPLO is CHARACTER*1
= 'U': Upper triangle of A is stored;
= 'L': Lower triangle of A is stored.
N
N is INTEGER
The order of the matrix A. N >= 0.
A
A is REAL array, dimension (LDA,N).
On entry, the triangular matrix A. If UPLO = 'U', the
leading N-by-N upper triangular part of the array A contains
the upper triangular matrix, and the strictly lower
triangular part of A is not referenced. If UPLO = 'L', the
leading N-by-N lower triangular part of the array A contains
the lower triangular matrix, and the strictly upper
triangular part of A is not referenced.
LDA
LDA is INTEGER
The leading dimension of the matrix A. LDA >= max(1,N).
ARF
ARF is REAL array, dimension (NT).
NT=N*(N+1)/2. On exit, the triangular matrix A in RFP format.
INFO
INFO is INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Further Details:
We first consider Rectangular Full Packed (RFP) Format when N is
even. We give an example where N = 6.
AP is Upper AP is Lower
00 01 02 03 04 05 00
11 12 13 14 15 10 11
22 23 24 25 20 21 22
33 34 35 30 31 32 33
44 45 40 41 42 43 44
55 50 51 52 53 54 55
Let TRANSR = 'N'. RFP holds AP as follows:
For UPLO = 'U' the upper trapezoid A(0:5,0:2) consists of the last
three columns of AP upper. The lower triangle A(4:6,0:2) consists of
the transpose of the first three columns of AP upper.
For UPLO = 'L' the lower trapezoid A(1:6,0:2) consists of the first
three columns of AP lower. The upper triangle A(0:2,0:2) consists of
the transpose of the last three columns of AP lower.
This covers the case N even and TRANSR = 'N'.
RFP A RFP A
03 04 05 33 43 53
13 14 15 00 44 54
23 24 25 10 11 55
33 34 35 20 21 22
00 44 45 30 31 32
01 11 55 40 41 42
02 12 22 50 51 52
Now let TRANSR = 'T'. RFP A in both UPLO cases is just the
transpose of RFP A above. One therefore gets:
RFP A RFP A
03 13 23 33 00 01 02 33 00 10 20 30 40 50
04 14 24 34 44 11 12 43 44 11 21 31 41 51
05 15 25 35 45 55 22 53 54 55 22 32 42 52
We then consider Rectangular Full Packed (RFP) Format when N is
odd. We give an example where N = 5.
AP is Upper AP is Lower
00 01 02 03 04 00
11 12 13 14 10 11
22 23 24 20 21 22
33 34 30 31 32 33
44 40 41 42 43 44
Let TRANSR = 'N'. RFP holds AP as follows:
For UPLO = 'U' the upper trapezoid A(0:4,0:2) consists of the last
three columns of AP upper. The lower triangle A(3:4,0:1) consists of
the transpose of the first two columns of AP upper.
For UPLO = 'L' the lower trapezoid A(0:4,0:2) consists of the first
three columns of AP lower. The upper triangle A(0:1,1:2) consists of
the transpose of the last two columns of AP lower.
This covers the case N odd and TRANSR = 'N'.
RFP A RFP A
02 03 04 00 33 43
12 13 14 10 11 44
22 23 24 20 21 22
00 33 34 30 31 32
01 11 44 40 41 42
Now let TRANSR = 'T'. RFP A in both UPLO cases is just the
transpose of RFP A above. One therefore gets:
RFP A RFP A
02 12 22 00 01 00 10 20 30 40 50
03 13 23 33 11 33 11 21 31 41 51
04 14 24 34 44 43 44 22 32 42 52
Definition at line 195 of file strttf.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 strttf.f(3)