The HPFENGINE Procedure

CONTROL Statement

CONTROL variable-list / options;

The CONTROL statement lists the numeric variables in the DATA= data set whose accumulated values are used as input in the forecasting process. The future values of the control variables in the forecast statement are determined by the EXTEND= option. Only input values used in a CONTROL statement are adjustable in the score evaluation subroutine HPFSCSUB.

The following options can be used with the CONTROL statement:

ACCUMULATE=option

specifies how the data set observations are accumulated within each time period for the variables listed in the CONTROL statement. If the ACCUMULATE= option is not specified in the CONTROL statement, accumulation is determined by the ACCUMULATE= option of the ID statement. See the ID statement ACCUMULATE= option for more details.

EXTEND=option

specifies how future values of the control variables are set. The following options are provided:

NONE: Future values are set to missing.
AVERAGE: Future values are set to the mean of the values in the fit range. This is the default.
FIRST: Future values are set to the first value found in the fit range.
LAST: Future values are set to the last value found in the fit range.
MINIMUM: Future values are set to the minimum of the values in the fit range.
MAXIMUM: Future values are set to the maximum of the values in the fit range.
MEDIAN: Future values are set to the median of the values in the fit range.
STOCHASTIC: Future values are forecast using the best suited exponential smoothing model. See STOCHASTIC statement for details.

REPLACEMISSING

specifies that embedded missing actual values over the fit range be replaced with values obtained by applying the method specified in the EXTEND= option. For EXTEND=STOCHASTIC, the replacement values are the one-step-ahead forecasts obtained over the fit range.

SETMISSING=option | number

specifies how missing values (either actual or accumulated) are assigned in the accumulated time series for variables listed in the CONTROL statement. If the SETMISSING= option is not specified in the CONTROL statement, missing values are set based on the SETMISSING= option of the ID statement. See the ID statement SETMISSING= option for more details.

TRIMMISS=option

specifies how missing values (either actual or accumulated) are trimmed from the accumulated time series for variables listed in the CONTROL statement.

If the TRIMMISS= option is not specified in the CONTROL statement, missing values are set based on the TRIMMISS= option of the ID statement. See the ID statement TRIMMISS= option for more details.

ZEROMISS=option

specifies how beginning and/or ending zero values (either actual or accumulated) are interpreted in the accumulated time series for variables listed in the CONTROL statement. If the ZEROMISS= option is not specified in the CONTROL statement, missing values are set based on the ZEROMISS= option of the ID statement. See the ID statement ZEROMISS= option for more details.

Last updated: March 05, 2026