I am using org-mode to track effort. I would like to be able to see, in column view, the sum total of time remaining on a project (that is, Effort - CLOCKSUM).
I haven't had much luck so far. This provides some code but requires a lot of dependencies I haven't been able to track down.
There is a very old discussion of how to use custom formulas for columns in org-mode here. However, perhaps this pertains to org tables, rather than column view, since I can't get even the example in the email to work:
:COLUMNS: %25ITEM %2d{`(,(or curval 0) 0)} %f{`(,(or curval 0) 0)}
%2fd{`(,(+ $f $d) 0)}
More generally, something like %f{FUBAR} returns the value of property 'f' regardless of what code I replace FUBAR with.