[yt-dev] Issue #857: Add support for symmetric logarithmic scaling (yt_analysis/yt)

[Nathan Goldbaum]

New issue 857: Add support for symmetric logarithmic scaling
https://bitbucket.org/yt_analysis/yt/issue/857/add-support-for-symmetric-logarithmic

Nathan Goldbaum:

See http://matplotlib.org/api/colors_api.html?highlight=symlog#matplotlib.colors.SymLogNorm

It should be possible to do something like:


```
#!python

slc.set_log('density', True, symmetric=True)
```

Or some similar syntax.


Responsible: ngoldbaum