1 files changed, 0 insertions, 73 deletions
diff --git a/admin/survey/excel/PHPExcel/Shared/JAMA/examples/polyfit.php b/admin/survey/excel/PHPExcel/Shared/JAMA/examples/polyfit.php
deleted file mode 100644
index fffc864..0000000
--- a/admin/survey/excel/PHPExcel/Shared/JAMA/examples/polyfit.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php
-require_once "../Matrix.php";
-/*
-* @package JAMA
-* @author Michael Bommarito
-* @author Paul Meagher
-* @version 0.1
-*
-* Function to fit an order n polynomial function through
-* a series of x-y data points using least squares.
-*
-* @param $X array x values
-* @param $Y array y values
-* @param $n int order of polynomial to be used for fitting
-* @returns array $coeffs of polynomial coefficients
-* Pre-Conditions: the system is not underdetermined: sizeof($X) > $n+1
-*/
-function polyfit($X, $Y, $n) {
-	for ($i = 0; $i < sizeof($X); ++$i)
-		for ($j = 0; $j <= $n; ++$j)
-			$A[$i][$j] = pow($X[$i], $j);
-	for ($i=0; $i < sizeof($Y); ++$i)
-		$B[$i] = array($Y[$i]);
-	$matrixA = new Matrix($A);
-	$matrixB = new Matrix($B);
-	$C = $matrixA->solve($matrixB);
-	return $C->getMatrix(0, $n, 0, 1);
-}
-
-function printpoly( $C = null ) {
-	for($i = $C->m - 1; $i >= 0; --$i) {
-		$r = $C->get($i, 0);
-		if ( abs($r) <= pow(10, -9) )
-			$r = 0;
-		if ($i == $C->m - 1)
-			echo $r . "x<sup>$i</sup>";
-		else if ($i < $C->m - 1)
-			echo " + " . $r . "x<sup>$i</sup>";
-		else if ($i == 0)
-			echo " + " . $r;
-	}
-}
-
-$X = array(0,1,2,3,4,5);
-$Y = array(4,3,12,67,228, 579);
-$points = new Matrix(array($X, $Y));
-$points->toHTML();
-printpoly(polyfit($X, $Y, 4));
-
-echo '<hr />';
-
-$X = array(0,1,2,3,4,5);
-$Y = array(1,2,5,10,17, 26);
-$points = new Matrix(array($X, $Y));
-$points->toHTML();
-printpoly(polyfit($X, $Y, 2));
-
-echo '<hr />';
-
-$X = array(0,1,2,3,4,5,6);
-$Y = array(-90,-104,-178,-252,-26, 1160, 4446);
-$points = new Matrix(array($X, $Y));
-$points->toHTML();
-printpoly(polyfit($X, $Y, 5));
-
-echo '<hr />';
-
-$X = array(0,1,2,3,4);
-$Y = array(mt_rand(0, 10), mt_rand(40, 80), mt_rand(240, 400), mt_rand(1800, 2215), mt_rand(8000, 9000));
-$points = new Matrix(array($X, $Y));
-$points->toHTML();
-printpoly(polyfit($X, $Y, 3));
-?>