How to subset a table object in R?

Question

How can I subset a table based on values and return those values? This returns just indices:

with(chickwts, table(feed))
with(chickwts, table(feed)) > 11
which(with(chickwts, table(feed)) > 11)

Output

> with(chickwts, table(feed))
feed
   casein horsebean   linseed  meatmeal   soybean sunflower 
       12        10        12        11        14        12 
> with(chickwts, table(feed)) > 11
feed
   casein horsebean   linseed  meatmeal   soybean sunflower 
     TRUE     FALSE      TRUE     FALSE      TRUE      TRUE 
> which(with(chickwts, table(feed)) > 11)
   casein   linseed   soybean sunflower 
        1         3         5         6 

Answer 1

You need to use the computed value twice, so its useful to use an intermediate variable:

x <- with(chickwts, table(feed))
x[x>11]
feed
   casein   linseed   soybean sunflower 
       12        12        14        12 

Answer 2

Here is an other approach making use of the Filter function:

Filter(function(x) x > 11, with(chickwts, table(feed)))
feed
   casein   linseed   soybean sunflower 
       12        12        14        12