NAME

get_linear_equation_rms_error - Returns the RMS error in Ax~b

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_linear_equation_rms_error
(
	const Matrix *a_mp,
	const Vector *x_vp,
	const Vector *b_vp,
	double *error_ptr
);

DESCRIPTION

This routine computes the RMS error between Ax and b. This error is what is minimized by least squares fitting.

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_best_diagonal_post_map , 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