Package PHPExcel\Shared\Trend
| PHPExcel_Best_Fit | PHPExcel_Best_Fit |
| PHPExcel_Exponential_Best_Fit | PHPExcel_Exponential_Best_Fit |
| PHPExcel_Linear_Best_Fit | PHPExcel_Linear_Best_Fit |
| PHPExcel_Logarithmic_Best_Fit | PHPExcel_Logarithmic_Best_Fit |
| PHPExcel_Polynomial_Best_Fit | PHPExcel_Polynomial_Best_Fit |
| PHPExcel_Power_Best_Fit | PHPExcel_Power_Best_Fit |
| trendClass | PHPExcel_trendClass |