[yt-users] derived quantities

Stephen Skory stephenskory at yahoo.com
Fri Dec 10 16:20:15 PST 2010


Matt,

> I have now opened up derived_quantities and inspected.  By searching
> for n_ret=1, which seems to be what you are looking for, I was able to
> identify the AngularMomentumVector quantity also has only one return
> value.  In that source code it returns an iterable of length 1.  Based
> on this, I am going to suggest:
> 
> return [ct.sum(),]


Bingo, that worked. Thanks, also, for the reminder to inspect the source for hints :).


 Stephen Skory
stephenskory at yahoo.com
http://stephenskory.com/
510.621.3687 (google voice)



More information about the yt-users mailing list