<?php // // +----------------------------------------------------------------------+ // | PHP Version 4 | // +----------------------------------------------------------------------+ // | Copyright (c) 1997-2003 The PHP Group | // +----------------------------------------------------------------------+ // | This source file is subject to version 2.0 of the PHP license, | // | that is bundled with this package in the file LICENSE, and is | // | available at through the world-wide-web at | // | http://www.php.net/license/2_02.txt. | // | If you did not receive a copy of the PHP license and are unable to | // | obtain it through the world-wide-web, please send a note to | // | license@php.net so we can mail you a copy immediately. | // +----------------------------------------------------------------------+ // | Authors: Jesus M. Castagnetto <jmcastagnetto@php.net> | // +----------------------------------------------------------------------+ // // $Id: ex_stats_simple.php 155644 2004-04-09 09:15:46Z jmcastagnetto $ // /** * @package Math_Stats */ require_once "Math/Stats.php"; // making some data sets $data = array (2,2.3,4.5,2,2,3.2,5.3,3,4,5,1,6); $dnulls = array (1.1650,null, "foo",0.6268, 0.6268, 0.0751, 0.3516, -0.6965); // instantiating a Math_Stats object $s = new Math_Stats(); echo "*** Original data set\n"; print_r($data); $s->setData($data); echo "Basic statistics\n"; print_r($s->calcBasic()); echo "\n*** A data set with nulls\n"; print_r($dnulls); echo "Let's generate an error\n"; print_r($s->setData($dnulls)); echo "Ignoring nulls and trying again\n"; $s->setNullOption(STATS_IGNORE_NULL); $s->setData($dnulls); echo "---> data after ignoring (removing) nulls\n"; print_r($s->getData()); echo "---> stats\n"; print_r($s->calcBasic()); echo "Assuming nulls are zeros and doing a full stats calculation\n"; $s->setNullOption(STATS_USE_NULL_AS_ZERO); $s->setData($dnulls); echo "---> data after setting nulls to zero\n"; print_r($s->getData()); echo "---> stats\n"; print_r($s->calcFull()); ?>