Okay so I just talked with Sachin on this. As Gilbert says, we should plan before we start work.
Initially, my proposal had a distinction between a CoordSys class and a RefFrame class. We are at a similar point now. Nevertheless, the two ways we thought this could work was by: a) Subclassing the coordinate system class from the vector module in the appropriate physics module. Or, b) Having an attribute, `coord_sys`, in the class defined in the physics module through which all the functionality of the vector module is accessed. Stefan has pointed out some problems with the second approach though. So, should we go with (a) or is there a better way to do this? -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
