Thanks again for the assistance before. I have been asked to modify the scatter plots a little more.  The current plots create an output which is distinguished only by color.  I have been asked to change up one set of data points so that the markers and series line are different (maybe change them to closed circles and a dashed line).  With the data sets being separated using the group statements I am not sure how to modify them to change only one set of markers.  Any ideas would be appreciated.  I haven't seen anything in the other posts in this forum yet. proc sgplot data=Chapter2.AspenNLinOUt; Scatter x=LiDARGapArea y=ExpandedGapArea / group=Polygon; yaxis label='Expanded Gap Area (m²)'; xaxis label='LiDAR Gap Area (m²)'; series x=LiDARGapArea y=Pred / group=Polygon markerattrs=; format Polygon best20.; run; Thanks again for the assistance. ... View more

The format statement solved it.  Thanks very much for the assistance. ... View more

Thanks for the prompt response, I have attempted the "do" statement and I think my inexperience is showing.  When I included a do statement the log stated that I needed an end statement as well. Here is the code I was using, proc nlin data=Aspen  NLINMEASURES plots(stats=all)=(diagnostics) ; ods rtf file="D:\Chapter2DataTables\AspenPowerFunction.rtf";   parms a=30 b=0.4;     model Y=a*X**b;     by polygon;   do group = 6796103, 6886289; tried to add the do statement here...   Output Out=Chapter2.AspenNlinOut Predicted=pred; run; ods rtf close; Title test; proc sgplot data=Chapter2.AspenNLinOUt; Scatter x=LiDARGapArea y=ExpandedGapArea / group=Polygon; yaxis label='Expanded Gap Area (m²)'; xaxis label='LiDAR Gap Area (m²)'; series x=LiDARGapArea y=Pred / group=Polygon; run; ... View more