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The LOESS Procedure

ODS Graphics

To request graphics with PROC LOESS, you must first enable ODS Graphics by specifying the ODS GRAPHICS ON statement. See Chapter 21, Statistical Graphics Using ODS, for more information. You can reference every graph produced through ODS Graphics with a name. The names of the graphs that PROC LOESS generates are listed in Table 50.6, along with the relevant PLOTS= options.

Table 50.6 ODS Graphics Produced by PROC LOESS

ODS Graph Name

Plot Description

PLOTS Option

ContourFitPanel

Panel of loess contour surfaces overlaid on scatter plots of data

CONTOURFITPANEL

ContourFit

Loess contour surface overlaid on scatter plot of data

CONTOURFITPANEL

DiagnosticsPanel

Panel of fit diagnostics

DIAGNOSTICS

FitPanel

Panel of loess curves overlaid on scatter plots of data

FITPANEL

FitPlot

Loess curve overlaid on scatter plot of data

FIT

ObservedByPredicted

Dependent variable versus loess fit

OBSERVEDBYPREDICTED

QQPlot

Normal quantile plot of residuals

QQPLOT

ResidualsBySmooth

Panel of residuals versus regressor by smoothing parameter values

RESIDUALSBYSMOOTH

ResidualByPredicted

Residuals versus loess fit

RESIDUALBYPREDICTED

ResidualHistogram

Histogram of fit residuals

RESIDUALHISTOGRAM

ResidualPanel

Panel of residuals versus regressors for fixed smoothing parameter value

RESIDUALS

ResidualPlot

Plot of residuals versus regressor

RESIDUALS

RFPlot

Side-by-side plots of quantiles of centered fit and residuals

RFPLOT

ScorePlot

Loess fit evaluated at scoring points

SCOREPLOT

CriterionPlot

Selection criterion versus smoothing parameter

CRITERION

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