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 the widely used seasonal adjustment software produced, distributed, and
maintained 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 is in the final stages of transitioning from using X-12-ARIMA to X-13ARIMA-SEATS,
with most groups within 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-12 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-12-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-12.
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