I am working on expanding a bit the meta-data of the fields in the snapshots. One thing which is currently incorrect is the scale-factor exponent. In some cases, it cannot be deduced from the units themselves so it has to be a value provided by the person implementing that scheme. While I am at it, I am also adding a description of the field. This allows us to go beyond just the name.
As you can see, I expand the io_make_output_field() macro to take two more arguments:
- The scale-factor exponent required to convert that field to physical units.
- A string for the description.
It is a bit of a pain to adapt all the schemes so I wanted to gather your opinion on this before going ahead.
(Note that SWIFT does not do any conversion from internal units to physical. The scale-factor exponent given there is only to inform the user about what to do if they want to do it themselves.) In the case of planetary-SPH, only the description makes sense I suppose. :)
Also fixes #593 (closed).