This SAS Note provides a sample on how to use the DEGREE= option on the REG statement in PROC SGPLOT to create a fit plot specifying the degree of polynomial fit. 

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These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

title 'Mileage by Horsepower';
/* Run PROC SGPLOT on data SASHELP.CARS, using only US vehicles in the analysis */
proc sgplot data=sashelp.cars(where=(origin='USA')) noautolegend;
  /* Generate a regression plot with confidence limits for mean predicted values */
  reg x=horsepower y=mpg_city / degree=2 clm='CL Mean'
     markerattrs=(color=cx678D67)                                                    
     lineattrs=(color=cx678D67)                                                    
     clmattrs=(clmfillattrs=(color=cxEEEDE3));                                     
  /* position the legend inside the top-right corner of the plot area */
  keylegend / location=inside position=topright across=1;
  /* show grid lines on both axes */
  xaxis grid;
  yaxis grid;
run;

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These sample files and code examples are provided by SAS Institute Inc. "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Recipients acknowledge and agree that SAS Institute shall not be liable for any damages whatsoever arising out of their use of this material. In addition, SAS Institute will provide no support for the materials contained herein.

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