Von: firedrake-bounces@imperial.ac.uk [mailto:firedrake-bounces@imperial.ac.uk] Im Auftrag von Andrew McRae Gesendet: 04 November 2015 15:56 An: firedrake@imperial.ac.uk Betreff: Re: [firedrake] Difference between u.split() and split(u) Use split(u) when you're going to use the constituent parts in symbolic forms. Use u.split() when you want to, e.g., look at the separate fields or manipulate them. (you're about the 10,000th person to meet the split/split confusion!) [Buesing, Henrik] Nevertheless, thank you for explaining it again. :-) Henrik On 4 November 2015 at 14:51, Buesing, Henrik <HBuesing@eonerc.rwth-aachen.de<mailto:HBuesing@eonerc.rwth-aachen.de>> wrote: Dear all, I have a multi-physics problem and u is my unknown. I was wondering what the difference between u.split() and split(u) is. It seems that the Jacobian is only right, when I use split(u) and then further use this in subroutines. If I use u.split() my Jacobian is zero… Thank you! Henrik -- Dipl.-Math. Henrik Büsing Institute for Applied Geophysics and Geothermal Energy E.ON Energy Research Center RWTH Aachen University ------------------------------------------------------ Mathieustr. 10 | Tel +49 (0)241 80 49907<tel:%2B49%20%280%29241%2080%2049907> 52074 Aachen, Germany | Fax +49 (0)241 80 49889<tel:%2B49%20%280%29241%2080%2049889> ------------------------------------------------------ http://www.eonerc.rwth-aachen.de/GGE hbuesing@eonerc.rwth-aachen.de<mailto:hbuesing@eonerc.rwth-aachen.de> ------------------------------------------------------