Dear Nathan,

Sorry for the incompleteness.
This is the error message from jupyter notebook:

ValueErrorTraceback (most recent call last)
<ipython-input-63-383c90a16917> in <module>()
     11                             fields=["cell_mass"],
     12                             weight_field=None,
---> 13                             extrema=dict(density=(1e-30, 1e-20), temperature=(1e1, 1e8))
     14                            )

/home/ytarumi/.local/yt/yt/data_objects/profiles.pyc in create_profile(data_source, bin_fields, fields, n_bins, extrema, logs, units, weight_field, accumulation, fractional, deposition)
   1093     setattr(obj, "fractional", fractional)
   1094     if fields is not None:
-> 1095         obj.add_fields([field for field in fields])
   1096     for field in fields:
   1097         if fractional:

/home/ytarumi/.local/yt/yt/data_objects/profiles.pyc in add_fields(self, fields)
    125         citer = self.data_source.chunks([], "io")
    126         for chunk in parallel_objects(citer):
--> 127             self._bin_chunk(chunk, fields, temp_storage)
    128         self._finalize_storage(fields, temp_storage)

/home/ytarumi/.local/yt/yt/data_objects/profiles.pyc in _bin_chunk(self, chunk, fields, storage)
    566     def _bin_chunk(self, chunk, fields, storage):
--> 567         rv = self._get_data(chunk, fields)
    568         if rv is None: return
    569         fdata, wdata, (bf_x, bf_y) = rv

/home/ytarumi/.local/yt/yt/data_objects/profiles.pyc in _get_data(self, chunk, fields)
    253         for i, field in enumerate(fields):
    254             units = chunk.ds.field_info[field].output_units
--> 255             arr[:,i] = chunk[field][filter].in_units(units)
    256         if self.weight_field is not None:
    257             units = chunk.ds.field_info[self.weight_field].output_units

ValueError: could not broadcast input array from shape (128,128) into shape (128)

2017-11-03 17:08 GMT-04:00 Nathan Goldbaum <>:
Can you share the full traceback along with the error message you're seeing? You can use to avoid cluttering your e-mail.

On Fri, Nov 3, 2017 at 3:54 PM, tyuta <> wrote:
Dear yt-users,

Hi, I want to ask you about phase plot. Some days ago, I asked how to sum up different datasets to make one profile plot, and it worked fine. This time, I tried to do the same thing in phase plot, but it did not work fine. Could you help me find out what the problem is?

(inside for loop):
     profile_medium = yt.create_profile(
             bin_fields=["density", "temperature"],
             n_bins=[128, 128],
             extrema=dict(density=(1e-30, 1e-20), temperature=(1e1, 1e8))
     plot_med = yt.ProfilePlot.from_profiles(profile_medium)
     profile_med = plot_med.profiles[0]
     profiles_sum_med = profiles_sum_med + profile_med["cell_mass"]

my_data_med = {"density": profile_med.x,   
           "temperature": profile_med.y, 
              "cell_mass": profiles_sum_med}
fake_ds_med = {"current_time": yt.YTQuantity(10, "Myr")} 
yt.save_as_dataset(fake_ds_med, "phaseplots_med_all.h5", my_data_med)

ds = yt.load("phaseplots_med_all.h5")
ad =

profile = yt.create_profile(ad,
                            ["density", "temperature"],
                            n_bins=[128, 128],
                            extrema=dict(density=(1e-30, 1e-20), temperature=(1e1, 1e8))

and I got this error:

could not broadcast input array from shape (128,128) into shape (128)


2017-10-26 16:15 GMT-04:00 tyuta <>:
Hi Suoqing Ji,

Thanks! I'll try that.

2017-10-26 15:59 GMT-04:00 Suoqing Ji <>:
Hi t yuta,

What you can do is to get the data as numpy array directly from the profiles you’ve generated, and sum them up by yourself. You can follow the last example at:

For each dataset, you can have one profile:
profile = plot.profiles[0]

Then you can sum up profile[‘cell_mass'] over different datasets, and plot it against profile.x

Best wishes,
Suoqing Ji
Ph.D Candidate
Department of Physics
University of California, Santa Barbara

On Oct 26, 2017, 12:51 PM -0700, tyuta <>, wrote:
Dear yt-users,

Hi, I want to ask you about profile plot. I'm analyzing Enzo data, and I'm trying to plot metallicity-cellmass of different 12 datasets into one curve. I can plot 12 curves on one image, but that's not what I want. Does anyone know some good way, or links to documentation?
I've attached the 12-curve plot. I want to sum up all the curves to get one curve.

Y.T.埋め込み画像 2
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