Re: [yt-users] trouble with callback on phase plot

3 Oct 2011

      Hi Christine,

Ah, crap. Sorry, I missed that. Leave it open; I'll have a look.

j

On Mon, Oct 3, 2011 at 11:51 AM, Christine Simpson
 wrote:
...
Hey Jeff,
Thanks to you and Matt for fixing this!  The text callback now works.
I'm not sure if you noticed, but I also mentioned that I was having the
same issue with the image_line callback in my ticket on bitbucket (but
not in my original post to this list).  That callback still does not
work.  I posted details to the ticket thread.  I left the ticket open,
but if you still want me to close it, I can.
Christine
On Mon, 2011-10-03 at 10:35 -0700, j s oishi wrote:
...
Hi Christine,
Matt fixed the bug. If you do a yt instinfo -u, you should be able to
run your original script and it should work. If it does, please close
the ticket on bitbucket. If it does not, let me know.
thanks,
j
On Sat, Sep 24, 2011 at 12:56 PM, j s oishi  wrote:
...
Hi Christine,
Thanks for posting the issue. I'll try to look into this in the next few days.
j
On Fri, Sep 23, 2011 at 3:55 PM, j s oishi  wrote:
...
Hi Christine,
Yup, this is definitely a fairly deep bug. Could you please file a
ticket at the bitbucket site (hg.yt-project.org)? Just record the
problem you're having, and I'll fill in the details below.
It seems that phase plots actually use matplotlib's pcolormesh to
plot, and this does not have the same image shape as imshow or other
plots; it seems to store the image as a 1D array rather than a 2D
array. This breaks the way the text call back attempts to place text.
Unfortunately, I don't see an easy fix, and I don't have the time at
the moment to sort it out.
I can offer you a workaround, which is slightly more verbose, but
should do the same thing. If you try
from yt.mods import *
import yt.visualization.profile_plotter as pp
phase = pp.PhasePlotter(r200[j],'kpc',["Density","Temperature","CellMassMsun"],weight
= None)
figure, axes = phase.to_mpl()
axes.hold(True)
axes.text([0.92,0.92],redshift_string,transform = axes.transAxes )
from yt.visualization._mpl_imports import \
   FigureCanvasAgg, FigureCanvasPdf
canvas = FigureCanvasPdf(figure)
canvas.print_figure("blah.pdf")
canvas = FigureCanvasAgg(figure)
canvas.print_figure("blah.png")
that should work. Sorry for the verbosity of this method; it is
somewhat new, but I can say that Matt and I have successfully used it
for exactly this purpose (as seen here:
http://www.slac.stanford.edu/~jsoishi/images/plot.png; those \rho^4/3
labels were done exactly this way).
Let me know if you need more help.
j
On Fri, Sep 23, 2011 at 3:16 PM, Christine Simpson
 wrote:
...
Hi all,
I'm having trouble adding text through a callback onto a phase plot.
I tried this code:
pc.add_phase_sphere(r200[j],'kpc',["Density","Temperature","CellMassMsun"],weight = None)
pc.set_zlim(1.0e-2,1.0e5)
pc.set_xlim(1.0e-30,5.0e-19)
pc.set_ylim(10.0,1.0e7)
pc.plots[-1].modify["text"]([0.92,0.92],redshift_string)
pc.save("output_%(file_num)s_branch_%yt-users@lists.spacepope.org(br)i"
% {"file_num":fn,"axis":ax,"br":branch_index[j]})
And I get this error:
Traceback (most recent call last):
 File "test_phase_plots.py", line 41, in <module>
   pc.save("output_%(file_num)s_branch_%(br)i" %
{"file_num":fn,"axis":ax,"br":branch_index[j]})
 File
"/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_collection.py", line 157, in save
   override=override, force_save=force_save))
 File
"/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 108, in save_image
   self._redraw_image()
 File
"/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 903, in _redraw_image
   self._run_callbacks()
 File
"/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_types.py", line 800, in _run_callbacks
   cb(self)
 File
"/share/home/01112/tg803911/yt_17May2011/yt-x86_64/src/yt-hg/yt/visualization/plot_modifications.py", line 910, in __call__
   y = plot.image._A.shape[1] * self.pos[1]
IndexError: tuple index out of range
The error arises in the save command, but the problem only happens when
I add the modify["text"] command.  Any ideas?
Christine
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