Coerce ordinal scale domain values to strings when sorting by key.
Coerce ordinal scale domain values to strings when sorting by key.

seyfert/vega,seyfert/vega,lgrammel/vega,nyurik/vega,timelyportfolio/vega,nyurik/vega,vega/vega,seyfert/vega,vega/vega,vega/vega,nyurik/vega,vega/vega,timelyportfolio/vega