The SASEFRED Interface Engine

IDLIST=

Specifies a list of time series IDs for accessing FRED data. To select more than one time series, list the unique time series IDs, separated by commas.

START=

Specifies the start date for the observation period (YYYY-MM-DD formatted string, optional; the default is 9999-12-31 (latest available))

END=

Specifies the end date for the observation period (YYYY-MM-DD formatted string, optional; the default is 1776-07-04 (earliest available))

FREQ=

Specifies the reporting frequency of the selected data (lower frequency to aggregate values to): ‘m’ for monthly, ‘d’ for daily. The FRED frequency aggregation feature converts higher-frequency data series to lower-frequency time series (such as converting a monthly time series to an annual time series). See Table 39.5 for the complete list of frequencies.

AGG=

Specifies the aggregation method used for frequency aggregation. The valid aggregation arguments are ’avg’, ’sum’, and ‘eop’; the default is ‘avg’.

LIMIT=

Specifies the maximum number of observations (rows) to return (integer between 1 and 100,000, optional; the default is 100,000)

OFFSET=

Specifies the number of rows (observations) to skip in the returned data set. Specifying OFFSET=0 is the same as omitting the OFFSET= option. If you specify both the OFFSET= and LIMIT= options, the number of rows specified in the OFFSET= option is skipped before the count begins of the number of rows, specified in the LIMIT= option, that are returned (nonnegative integer, optional; the default is 0).

SORT=

Specifies the order of the results in ascending or descending observation_date order. The valid sort arguments are ‘asc’ and ‘desc’; the default is ‘asc’.

UNITS=

Specifies a data value transformation. The valid units arguments are ‘lin’, ‘chg’, ‘ch1’, ‘pch’, ‘pc1’, ‘pca’, ‘cch’, ‘cca’, and ‘log’; the default is ‘lin’. See Table 39.6 for more information about units.

VINTAGE=

Specifies one or more dates in history. Vintage dates are used to download data as they existed on that specific date in history (YYYY-MM-DD formatted string, optional; by default no vintage dates are set). You can request one or many vintage dates at a time; dates are in YYYY-MM-DD format and are separated by commas (no blanks allowed). For multiple vintage dates, specify OUTPUT=2 for all observations or OUTPUT=3 for only new or revised observations.

OUTPUT=

Specifies an output type. The valid output arguments are ‘1’ for Observations by Real-Time Period; ‘2’ for Observations by Vintage Date, All Observations; ‘3’ for Observations by Vintage Date, New and Revised Observations Only; and ‘4’ for Observations, Initial Release Only (integer, optional; the default is ‘1’).

FORMAT=

Specifies a file extension that indicates the type of file to retrieve. Only XML is supported for the SASEFRED interface engine in SAS/ETS 13.1 (SAS 9.4).