Density curves might not scale correctly in graphics output created with PROC SGPLOT or PROC SGPANEL. This problem is most likely to occur if a DENSITY statement is specified without a HISTOGRAM statement.
To circumvent the problem, add a HISTOGRAM statement and set the TRANSPARENCY option to 1 to make the histogram transparent.
Below is sample code that illustrates the syntax:
proc sgplot data=test noautolegend;
histogram number / group=type scale=count transparency=1;
density number / group=type type=kernel scale=count name='density';
keylegend 'density';
run;