Setting the Transformations Options

The Transformations table contains a row for each column that you assigned to the Time series variable role.

Option Name	Description
Accumulation	specifies the accumulation method for the variable. This option is available if you assigned a variable to the Time ID variable role. You can choose from these options: None does not accumulate the vector values. Sum accumulates the vector values based on the summation of their values. Missing values are ignored in the summation. If , then a is set to missing. Average accumulates the vector values based on the average of their values. $eh equals , r with macron above , equals , fraction 1 , over q sub n end fraction . cap sigma with q equals 1 below and with q above . r sub q. Click image for alternative formats.$ Missing values are ignored in the summation. If , then a is set to missing.
Transformation	specifies the transformation to apply to the time series variable. You can choose from these transformations: Logarithmic Square-root Logistic
Simple differencing	specifies a value for the simple difference.
Seasonal differencing	specifies a value for the seasonal difference. This option is available if the value of the Seasonal length option on the Data tab is greater than 1.