How to loop through an list(CDT) and print its indexes in a grid?...

can you not simply use enumerate(cdt.length)? this will give you a sequence number. If you want an index that starts with 1, you can try adding 1 using apply(sum, enumerate(cdt.length),1) - However, make sure your CDT has a column to store this info.

can you not simply use enumerate(cdt.length)? this will give you a sequence number. If you want an index that starts with 1, you can try adding 1 using apply(sum, enumerate(cdt.length),1) - However, make sure your CDT has a column to store this info.