[aspect-devel] Outputting derived quantities

[Wolfgang Bangerth]

All,
we've been putting a lot of different derived quantities into the 
graphical output files: viscosity, strain rate, the difference between 
pressure/temperature and their adiabatic values for a given depth, etc.

I've rewritten this part, and what we put into the output files is now 
implemented using the same plugin framework we use for practically 
everything else already: you write a little class that computes whatever 
it is you want to output from velocity/pressure/temperature, register 
it, and list it in the appropriate place of the input file, and it will 
be run whenever you generate graphical output. This way, we don't have 
to output *everything* every time we generate output, and it will 
continue to scale as people add more and more functions they may want to 
output.

I haven't documented this so far but will in the next few days. In the 
meantime, let me know if you find anything that doesn't work!

Cheers
  W.

-- 
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Wolfgang Bangerth               email:            bangerth at math.tamu.edu
                                 www: http://www.math.tamu.edu/~bangerth/