[yt-users] Error annotating particles

[José Mauricio Utreras]

Hi yt-users,

I'm using an old and simple script to overplot particles but now is not
working.

Cheers!

José Utreras

slc=yt.SlicePlot(ds, 'z','density', width=(25,'kpc'))
slc.annotate_particles(width=20*kpc)


~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_window.py
in run_callbacks(self)   1006                 try:-> 1007
       callback(cbw)   1008                 except
YTDataTypeUnsupported as e:
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_modifications.py
in _check_geometry(self, plot)     53         if supp is None or geom
in supp:---> 54             return func(self, plot)     55         if
cs in ("axis", "figure") and "force" not in supp:
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_modifications.py
in __call__(self, plot)   1574         px, py =
self.convert_to_plot(plot,-> 1575
[np.array(particle_x[gg][::self.stride]),   1576
np.array(particle_y[gg][::self.stride])])
~/miniconda3/lib/python3.6/site-packages/yt/units/yt_array.py in
__getitem__(self, item)   1162     def __getitem__(self, item):-> 1163
        ret = super(YTArray, self).__getitem__(item)   1164         if
ret.shape == ():
TypeError: slice indices must be integers or None or have an __index__ method

During handling of the above exception, another exception occurred:
YTPlotCallbackError                       Traceback (most recent call
last)~/miniconda3/lib/python3.6/site-packages/IPython/core/formatters.py
in __call__(self, obj)    334             method =
get_real_method(obj, self.print_method)    335             if method
is not None:--> 336                 return method()    337
return None    338         else:
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_container.py
in newfunc(*args, **kwargs)     76             # it is the
responsibility of _setup_plots to     77             # call
args[0].run_callbacks()---> 78             args[0]._setup_plots()
79         rv = f(*args, **kwargs)     80         return rv
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_window.py
in _setup_plots(self)    954     955
self._set_font_properties()--> 956         self.run_callbacks()    957
        self._plot_valid = True    958
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_window.py
in run_callbacks(self)   1011
six.reraise(YTPlotCallbackError,   1012
 YTPlotCallbackError(callback._type_name, e),-> 1013
              sys.exc_info()[2])   1014             for key in
self.frb.keys():   1015                 if key not in keys:
~/miniconda3/lib/python3.6/site-packages/six.py in reraise(tp, value,
tb)    683             value = tp()    684         if
value.__traceback__ is not tb:--> 685             raise
value.with_traceback(tb)    686         raise value    687
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_window.py
in run_callbacks(self)   1005                 callback =
CallbackMaker(*args[1:], **kwargs)   1006                 try:-> 1007
                   callback(cbw)   1008                 except
YTDataTypeUnsupported as e:   1009
six.reraise(YTDataTypeUnsupported, e)
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_modifications.py
in _check_geometry(self, plot)     52         cs = getattr(self,
"coord_system", None)     53         if supp is None or geom in
supp:---> 54             return func(self, plot)     55         if cs
in ("axis", "figure") and "force" not in supp:     56
return func(self, plot)
~/miniconda3/lib/python3.6/site-packages/yt/visualization/plot_modifications.py
in __call__(self, plot)   1573             if gg.sum() == 0: return
1574         px, py = self.convert_to_plot(plot,-> 1575
     [np.array(particle_x[gg][::self.stride]),   1576
    np.array(particle_y[gg][::self.stride])])   1577
plot._axes.scatter(px, py, edgecolors='None', marker=self.marker,
~/miniconda3/lib/python3.6/site-packages/yt/units/yt_array.py in
__getitem__(self, item)   1161    1162     def __getitem__(self,
item):-> 1163         ret = super(YTArray, self).__getitem__(item)
1164         if ret.shape == ():   1165             return
YTQuantity(ret, self.units, bypass_validation=True)
YTPlotCallbackError: annotate_particles callback failed with the
following error: slice indices must be integers or None or have an
__index__ method
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