trader_ema

(PECL trader >= 0.2.0)

trader_emaExponential Moving Average

Description

array trader_ema ( array $real [, integer $timePeriod ] )

Parameters

real

Array of real values.

timePeriod

Number of period. Valid range from 2 to 100000.

Return Values

Returns an array with calculated data or false on failure.

add a note add a note

User Contributed Notes 2 notes

up
0
abovesense at hotmail dot com
2 months ago
Hello there,
Is someone have tried the function and can tell what is the return size digits after the decimal point, meaning what is the precision of the returned  answer ?
Best,
laye
up
0
manoj dot monu23 at gmail dot com
1 year ago
the trader_ema() function does'nt work correctly , it calculate just average of last period entries. Follow the following code for trader_ema:
function EMACalculator($limit,$array)
{
    $EMA_previous_day = $array[0];
    //print_r($array);
    $multiplier1 = (2/$limit+1);
    $EMA[]=array();
    $EMA = $array[0];
    $Close= $array[1];
   
    while($limit)
{   
    //echo"EMA is $EMA\n";
    $EMA = ($Close - $EMA_previous_day) * $multiplier1 + $EMA_previous_day;
    $EMA_previous_day= $EMA;
   
    $limit--;
}
return $EMA;
}
where $limit accept the period of ema  and $array : accept array of data for ema calculation.
To Top