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| The X12 Procedure |
| ODS Graphics |
This section describes the use of ODS Graphics for creating graphs with the X12 procedure. To request these graphs, you must specify the ODS GRAPHICS ON statement.
The graphs available through ODS Graphics are ACF plots, PACF plots, a residual histogram, and spectral graphs. ACF and PACF plots for regARIMA model identification are not available unless the IDENTIFY statement is used. ACF plots, PACF plots, the residual histogram, and the residual spectral graph for diagnosis of the regARIMA model residuals are not available unless the CHECK statement is used. A spectral plot of the original series is always available; however, additional spectral plots are provided when the X11 statement and CHECK statement are used. When the ODS GRAPHICS ON statement is not used, the ACF, PACF, and spectral analysis are displayed as columns of a table. The residual histogram is available only when ODS GRAPHICS ON is specified. To obtain a table that contains values related to the residual histogram, use the ODS OUTPUT statement.
ODS Graph Names
PROC X12 assigns a name to each graph it creates by using ODS Graphics. You can use this name to refer to the graph when you use ODS Graphics. The names are listed in Table 34.10.
ODS Graph Name |
Plot Description |
|---|---|
ACFPlot |
Autocorrelation of regression residuals |
PACFPlot |
Partial autocorrelation of regression residuals |
SpectralPlot |
Spectral plot of original or adjusted series or residuals |
ErrorACFPlot |
Autocorrelation of regARIMA model residuals |
ErrorPACFPlot |
Partial autocorrelation of regARIMA model residuals |
SqErrorACFPlot |
Autocorrelation of squared regARIMA model residuals |
ResidualHistogram |
Distribution of regARIMA residuals |
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