PhDMeiwp

I am currently analyzing a dataset of stable isotopes. I am trying to make SEAc of the responses, and Im using the code and data shown below this post.

I want to compare the groups with single digits, to the groups with double digits. (1 vs 11, 2 vs 12 etc).

However, I get the following reply from R ; (I am running R studio on a Macbook Air)
"# Plot the convex hull
+   lines(CH$xcoords,CH$ycoords,lwd=1,lty=3)
+ 
+   
+ }