NAME
get_best_diagonal_post_map - Finds the best post diagonal map between two matrices
SYNOPSIS
#include "n/n_fit.h"
Example compile flags (system dependent):
-DLINUX_X86_64 -DLINUX_X86_64_OPTERON -DGNU_COMPILER
-I/home/kobus/include
-L/home/kobus/misc/load/linux_x86_64_opteron -L/usr/lib/x86_64-linux-gnu
-lKJB -lfftw3 -lgsl -lgslcblas -ljpeg -lSVM -lstdc++ -lpthread -lSLATEC -lg2c -lacml -lacml_mv -lblas -lg2c -lncursesw
int get_best_diagonal_post_map
(
Vector **result_vpp,
const Matrix *in_mp,
const Matrix *out_mp
);
DESCRIPTION
This routine finds the diagonal matrix which, when used to post multiply the
matrix pointed to by in_mp, gives the closest matrix in the least squares
sense to the matrix pointed to by out_mp.
Put differently, this routine calculates
MIN { || AX - B || }, over all diagonal matrices, X
2
The diagonal map is put into the vector pointed to by *result_vpp, which
is created if *result_vpp is NULL, resized if *result_vpp is the wrong
sized, and reused otherwise. The dimensions of *in_mp and *out_mp must be
the same.
RETURNS
NO_ERROR on success, and ERROR on failure, with an appropriate error
message being set.
DISCLAIMER
This software is not adequatedly tested. It is recomended that
results are checked independantly where appropriate.
AUTHOR
Kobus Barnard
DOCUMENTER
Kobus Barnard
SEE ALSO
least_squares
,
least_squares_2
,
get_linear_equation_rms_error
,
get_diagonal_post_map_error
,
get_best_map
,
get_best_post_map
,
get_post_map_error
,
get_svd_basis_for_rows
,
get_row_fits
,
project_rows_onto_basis
,
get_best_linear_fit
,
get_best_linear_fit_2