Extraction methods really should take disord objects. Look:
> a <- clifford(list(1,1:2,1:3,2:3,2:5),1:5)
> a
Element of a Clifford algebra, equal to
+ 1e_1 + 2e_12 + 4e_23 + 3e_123 + 5e_2345
> a[coeffs(a)<3]
Error in is_ok_clifford(terms, coeffs) :
all(term_elements > 0) is not TRUE
>
Above, a[coeffs(a)<3] has a perfectly clear meaning, consistent with the fact that the index is a disord, and the idiom should work.
Extraction methods really should take
disordobjects. Look:Above,
a[coeffs(a)<3]has a perfectly clear meaning, consistent with the fact that the index is adisord, and the idiom should work.