Update hub-circular.md

Hubs/hub-circular.md

@@ -6,11 +6,11 @@ author: Florian Hartig
 synopsis: 
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+Circular or directional statistics (see also [wikipedia](https://en.wikipedia.org/wiki/Directional_statistics)) is the subfield of statistics that deals with the analysis of directions, often angles. A typical example of such a question is the mean of an angular quantity (see [wikipedia](https://en.wikipedia.org/wiki/Mean_of_circular_quantities)).
 
-* Circular Statistics in R, http://circstatinr.st-andrews.ac.uk/
-* https://cran.r-project.org/web/packages/circular/index.html
-
-* https://en.wikipedia.org/wiki/Directional_statistics
-* https://en.wikipedia.org/wiki/Mean_of_circular_quantities
+Unfortunately, analysis options for circular data in R are limited. The following links may be a good start 
 
+* https://cran.r-project.org/web/packages/circular/index.html
+* http://stats.stackexchange.com/questions/tagged/circular-statistics
+* Book: Circular Statistics in R, http://circstatinr.st-andrews.ac.uk/