New issue 1016: Particle callback doesn't handle quantities correctly https://bitbucket.org/yt_analysis/yt/issue/1016/particle-callback-doesnt-han... Nathan Goldbaum: The following test script: ``` #!python import yt from yt.units import Mpc ds = yt.load('IsolatedGalaxy/galaxy0030/galaxy0030') p = yt.SlicePlot(ds, 2, 'density') p.annotate_particles(0.3*Mpc) p.save() ``` errors out with the following traceback: ``` #!python Traceback (most recent call last): File "test.py", line 7, in <module> p.save() File "/Users/goldbaum/Documents/yt-hg/yt/visualization/plot_container.py", line 74, in newfunc args[0].run_callbacks() File "/Users/goldbaum/Documents/yt-hg/yt/visualization/plot_window.py", line 1003, in run_callbacks sys.exc_info()[2]) File "/Users/goldbaum/Documents/yt-hg/yt/visualization/plot_window.py", line 999, in run_callbacks callback(cbw) File "/Users/goldbaum/Documents/yt-hg/yt/visualization/plot_modifications.py", line 1440, in __call__ reg = self._get_region((x0,x1), (y0,y1), plot.data.axis, data) File "/Users/goldbaum/Documents/yt-hg/yt/visualization/plot_modifications.py", line 1472, in _get_region LE[zax] = data.center[zax].ndarray_view() - self.width*0.5 File "/Users/goldbaum/Documents/yt-hg/yt/units/yt_array.py", line 750, in __rsub__ lo = sanitize_units_add(self, left_object, "subtraction") File "/Users/goldbaum/Documents/yt-hg/yt/units/yt_array.py", line 134, in sanitize_units_add raise YTUnitOperationError(op_string, inp.units, dimensionless) yt.utilities.exceptions.YTPlotCallbackError: annotate_particles callback failed with the following error: The subtraction operator for YTArrays with units (Mpc) and (1) is not well defined. ``` _______________________________________________ yt-dev mailing list yt-dev@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-dev-spacepope.org