On Tue, Aug 23, 2011 at 20:29, Carsten Dominik <carsten.domi...@gmail.com> wrote: > I have checked, underscore is aceptable, calc allows it in variables names. > However, I would not recommend adding any more characters to this regexp.
Just to mention: Although "_" is the subscript operator that takes the nth vector element in Calc, I don't mind the change since the formula below that uses "$vector_1" did also not work before the change probably because some other regexp to parse the field name already included "_". And the alternative formula with "subscr($vector, 1)" seems to be syntactically more robust/flexible/clear/etc. anyway. | | [x y] | x | x | #ERROR | x | | ^ | vector | | | | | #+TBLFM: @<$3 = $2_1 :: @<$4 = subscr($2, 1) :: @<$5 = $vector_1 :: @<$6 = subscr($vector, 1) Michael