Adding Insets to a SCATTERPLOTMATRIX Graph

The SCATTERPLOTMATRIX statement provides the following options for displaying insets in the cells of the graph matrix (see the documentation for the SCATTERPLOTMATRIX statement in the SAS Graph Template Language: Reference for complete details about these options):

INSET= (info-options)	Determines what information is displayed in an inset. Accepts one, two, or all three of the following keywords: NOBS Number of observations PEARSON Pearson product-moment correlation PEARSONPVAL Probability value for the Pearson product-moment correlation This option must be used to determine which inset information is displayed in each cell. If this option is not used, the related CORROPTS= and INSETOPTS= options are ignored.
CORROPTS= (correlation-options)	Controls statistical options for computing correlations. These options are similar to PROC CORR options. Accepts one or more of the following keywords: EXCLNPWGT= specifies whether observations with non-positive weight values are excluded from the analysis. Accepts TRUE (the default) or FALSE. NOMISS= specifies whether observations with missing values are excluded from the analysis that is displayed in the inset. Accepts TRUE (the default) or FALSE. The NOMISS=TRUE option does not exclude observations with missing values from the plot. WEIGHT= specifies a weighting variable to use in the calculation of Pearson weighted product-moment correlation. The observations with missing weights are excluded from the analysis. Accepts the name of a numeric column. VARDEF= specifies the variance divisor in the calculation of variances and covariances. Accepts one of the keywords DF (Degrees of Freedom, the default, N - 1), N (number of observations), WDF (sum of weights minus 1), WEIGHT (sum of weights).
INSETOPTS= (appearance-options)	Controls the inset placement and other appearance features. AUTOALIGN= specifies whether the inset is automatically aligned within the layout. Accepts keywords NONE (no auto-alignment, the default), AUTO (available only with scatter plots, attempts to center the inset in the area that is farthest from any surrounding markers), or a location list in parentheses that contains one or more keywords that identify the preferred alignment (TOPLEFT TOP TOPRIGHT LEFT CENTER RIGHT BOTTOMLEFT BOTTOM BOTTOMRIGHT). BACKGROUNDCOLOR= specifies the color of the inset background. Accepts a style reference or a color specification. BORDER= specifies whether a border is displayed around the inset. Accepts TRUE or FALSE (the default). HALIGN= specifies the horizontal alignment of the inset. Accepts keywords LEFT (the default), CENTER. or RIGHT. OPAQUE= specifies whether the inset background is opaque (TRUE) or transparent (FALSE, the default). TEXTATTRS= specifies the text properties of the entire inset. TITLE= specifies a title for the inset. TITLEATTRS= specifies the text properties of the inset title. VALIGN= specifies the vertical alignment of the inset. Accepts keywords TOP (the default), CENTER. or BOTTOM.

The following example uses all three of these options to display an inset in the cells of a graph that is generated with the SCATTERPLOTMATRIX statement:

proc template;
 define statgraph spminset;
   begingraph;
     entrytitle "Scatter Plot Matrix with Insets Showing";
     entrytitle "Correlation Coefficients and P Values";
     layout gridded;
       scatterplotmatrix sepalwidth sepallength /
         rowvars=(petalwidth petallength)
         inset=(nobs pearson pearsonpval)
         insetopts=(autoalign=auto border=true opaque=true)
         corropts=(nomiss=true vardef=df)
         markerattrs=(size=5px);
     endlayout;
   endgraph;
 end;
run;

proc sgrender data=sashelp.iris template=spminset;
run;

Notice that the inset position might change from cell to cell in order to avoid obscuring point markers.