Announcements of program updates and other information related
to X-12-ARIMA, Win X-12, X-13ARIMA-SEATS, Win X-13, and other programs are distributed
through a moderated mailing list called x12a-announce.
X-12-ARIMA is a seasonal adjustment software that was produced by the Census Bureau.
Extensive time series modeling and model selection capabilities
for linear regression models with ARIMA errors (regARIMA models);
Many seasonal and trend filter options;
Diagnostics of the quality and stability of the adjustments
achieved under the options selected;
The ability to efficiently process many series at once.
The Census Bureau has transitioned from using X-12-ARIMA to X-13ARIMA-SEATS,
with the Census Bureau producing seasonal adjustments with X-13ARIMA-SEATS rather than X-12-ARIMA.
There are distributions of X-12-ARIMA for Windows® PC and Linux/Unix platforms.
For Windows systems, the Census Bureau's Win X-13 interface program is recommended,
but it is also possible to execute the program using command line input.
In addition, a SAS®/Graph program named X-13-Graph
is available that allows users to
generate useful graphical diagnostics from X-12-ARIMA (and X-13ARIMA-SEATS) output.
It requires no knowledge of SAS®, and can generate more types of graphs than Win X-13.
Updated versions of three software packages were released on September 17, 2013:
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