note 118790 added to function.trader-linearreg-slope

// If you don't have the php_trader library or needs more than 3 precision digits, // you can use this function: public static function linearreg_slope( $valuesIn, $period ) { $valuesOut = array(); $startIdx = 0; $endIdx = count($valuesIn) - 1; $sumX = $period * ( $period - 1 ) * 0.5; $sumXSqr = $period * ( $period - 1 ) * ( 2 * $period - 1 ) / 6; $divisor = $sumX * $sumX - $period * $sumXSqr; for ( $today = $startIdx, $outIdx = 0; $today <= $endIdx; $today++, $outIdx++ ) { $sumXY = 0; $sumY = 0; if ( $today >= $period - 1 ) { for( $aux = $period; $aux-- != 0; ) { $sumY += $tempValue = $valuesIn[$today - $aux]; $sumXY += (double)$aux * $tempValue; } $valuesOut[$outIdx] = ( $period * $sumXY - $sumX * $sumY) / $divisor; } } return $valuesOut; } ---- Server IP: 72.52.91.14 Probable Submitter: 85.251.188.122 ---- Manual Page -- http://php.net/manual/en/function.trader-linearreg-slope.php Edit -- https://master.php.net/note/edit/118790 Del: integrated -- https://master.php.net/note/delete/118790/integrated Del: useless -- https://master.php.net/note/delete/118790/useless Del: bad code -- https://master.php.net/note/delete/118790/bad+code Del: spam -- https://master.php.net/note/delete/118790/spam Del: non-english -- https://master.php.net/note/delete/118790/non-english Del: in docs -- https://master.php.net/note/delete/118790/in+docs Del: other reasons-- https://master.php.net/note/delete/118790 Reject -- https://master.php.net/note/reject/118790 Search -- https://master.php.net/manage/user-notes.php