[yt-users] time_series_phase plots & missing color bars

[Robert Thompson]

Hello fellow yt users!

I'm new at yt and have been working through the cookbook for a few days now.  So far I've got 2 issues that I cannot resolve.  I'm trying to make Phase diagrams (using time_series_phase.py form the cookbook), and I'm getting the following error on the SDSC cluster Triton (who's environment & installations were set up by Matt Turk):

[hipacc-16 at login-4-0 unigrid]$ python time_series_phase.py
/projects/lca-group/local-dev/lib/python2.6/site-packages/pytz/__init__.py:29: UserWarning: Module readline was already imported from /projects/lca-group/local-dev/lib/python2.6/lib-dynload/readline.so, but /projects/lca-group/local-dev/lib/python2.6/site-packages is being added to sys.path
  from pkg_resources import resource_stream
yt         INFO       2010-07-30 16:56:57,368 Created plot collection with default plot-center = [0.5, 0.5, 0.5]
yt         INFO       2010-07-30 16:56:57,380 Getting the binary hierarchy
yt         INFO       2010-07-30 16:56:57,383 Finished with binary hierarchy reading
yt         INFO       2010-07-30 16:56:57,487 Getting field Density from 8
yt         INFO       2010-07-30 16:56:57,536 Getting field Temperature from 8
yt         INFO       2010-07-30 16:56:57,743 Getting field CellMassMsun from 8
yt         INFO       2010-07-30 16:56:57,743 Getting field CellVolume from 8
yt         INFO       2010-07-30 16:56:57,743 Getting field dx from 8
yt         INFO       2010-07-30 16:56:57,774 Getting field dy from 8
yt         INFO       2010-07-30 16:56:57,806 Getting field dz from 8
yt         INFO       2010-07-30 16:56:59,331 Saved DD0000_Profile2D_0_Density_Temperature_CellMassMsun.png
yt         INFO       2010-07-30 16:56:59,338 Created plot collection with default plot-center = [0.5, 0.5, 0.5]
yt         INFO       2010-07-30 16:56:59,343 Getting the binary hierarchy
yt         INFO       2010-07-30 16:56:59,346 Finished with binary hierarchy reading
yt         INFO       2010-07-30 16:56:59,448 Getting field Density from 8
yt         INFO       2010-07-30 16:56:59,494 Getting field Temperature from 8
Traceback (most recent call last):
  File "time_series_phase.py", line 23, in <module>
    y_bins=128, y_bounds = (1e2, 1e7))
  File "/projects/lca-group/local-dev/lib/python2.6/site-packages/yt-2.0dev-py2.6-linux-x86_64.egg/yt/raven/plot_collection.py", line 1130, in add_phase_sphere
    lazy_reader, id, axes, figure, fractional)
  File "/projects/lca-group/local-dev/lib/python2.6/site-packages/yt-2.0dev-py2.6-linux-x86_64.egg/yt/raven/plot_collection.py", line 1015, in add_phase_object
    lazy_reader)
  File "/projects/lca-group/local-dev/lib/python2.6/site-packages/yt-2.0dev-py2.6-linux-x86_64.egg/yt/lagos/Profiles.py", line 402, in __init__
    self._args = self._get_bins(data_source)
  File "/projects/lca-group/local-dev/lib/python2.6/site-packages/yt-2.0dev-py2.6-linux-x86_64.egg/yt/lagos/Profiles.py", line 47, in save_state
    tr = func(*args, **kwargs)
  File "/projects/lca-group/local-dev/lib/python2.6/site-packages/yt-2.0dev-py2.6-linux-x86_64.egg/yt/lagos/Profiles.py", line 453, in _get_bins
    raise EmptyProfileData()
yt.lagos.Profiles.EmptyProfileData
[hipacc-16 at login-4-0 unigrid]$ 

After all this is spit out there is a single PNG in the directory, when there should be ~27.  I tried it with both lazy_reading on and off, both yield the same result.

My second issue is that I'm not getting color bars when making multiplots through the use of multi_plot.py.  Here is the script (slightly altered from the cookbook) I am using:

from yt.mods import * # set up our namespace                                        
orient = 'horozontal'
for i in range(0,27):
    fn = "RD%04i/RedshiftOutput%04i" % (i,i) # parameter file to load               
    pf = load(fn) # load data                                                       
    fig, axes, colorbars = raven.get_multi_plot(3, 1, colorbar=orient, bw=4)
    pc = PlotCollection(pf, center=[0.5,0.5,0.5])
    p = pc.add_projection("Density", 0, figure=fig, axes = axes[0][0], use_colorbar\
=False)
    pc.set_cmap("bds_highcontrast")
    p = pc.add_projection("Temperature", 0, figure=fig, axes=axes[0][1], use_colorb\
ar=False)
    p = pc.add_projection("particle_density_pyx", 0, figure=fig, axes=axes[0][2], u\
se_colorbar=False)
    for p, cax in zip(pc.plots, colorbars):
        cbar = cb.Colorbar(cax, p.image, orientation=orient)
        p.colorbar = cbar
        p._autoset_label()
    fig.savefig("%s_projection" % pf)

And it produces images like this: http://img.photobucket.com/albums/v321/mons00n/RedshiftOutput0009_projection.png

I'm quite happy to be getting results, but no idea on how to fix the missing color bar problem.  Thanks for your time!

-Robert Thompson
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