$_trendTypes $_trendTypes : array<mixed,string> Names of the best-fit trend analysis methods Type array<mixed,string>
$_trendTypePolyOrders $_trendTypePolyOrders : array<mixed,string> Names of the best-fit trend polynomial orders Type array<mixed,string>
$_trendCache $_trendCache : array<mixed,\PHPExcel_Best_Fit> Cached results for each method when trying to identify which provides the best fit Type array<mixed,\PHPExcel_Best_Fit>
calculate() calculate( $trendType = self::TREND_BEST_FIT, $yValues, $xValues = array(), $const = True) Parameters $trendType $yValues $xValues $const