示例#1
0
// $Id: ex_stats_simple.php,v 1.3 2003/01/04 11:55:39 mj Exp $
//
/**
 * @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(1.165, 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";