Mailman 3 November 2012 - yt-users

Stars on volume rendering
by Elizabeth Harper-Clark Dec. 11, 2021

Dec. 11, 2021

Hi all, Thanks for all your help over the last couple of days. One more question: - Can I plot particles on a volume rendered image? I have stars and I want to show where they are! Thanks, Libby -- Elizabeth Harper-Clark MA MSci PhD Candidate, Canadian Institute for Theoretical Astrophysics, UofT Sciences and Engineering Coordinator, Teaching Assistants' Training Program, UofT www.astro.utoronto.ca/~h-clark <http://www.astro.utoronto.ca/%7Eh-clark> h-clark(a)cita.utoronto.ca Astronomy office phone: +1-416-978-5759

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Variance in phase/profiles
by david collins April 11, 2020

April 11, 2020

Hi, Everybody! Does anyone out there have a technique for getting the variance out of a profile object? A profile object is good at getting <X> vs. B, I'd then like to get < (X - <X>)^2 > vs B. Matt and I had spittballed the possibility some time ago, but I was wondering if anyone out there had successfully done it. Thanks, d. -- Sent from my computer.

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Star Projections
by Munier Azzam Salem Dec. 5, 2012

Dec. 5, 2012

Hi yt gurus, I've been making projections of star_density from enzo output files and they seem to be working out fine. However, wherever particles do not exist the background remains white instead of following my chosen colormap. Is there a way to paint these areas to follow the colormap? thanks! Munier I've attached an image of what gets plotted, and the relevant bits of my script are: *from yt.mods import ** * * *fName = "DD0006/test_sim_0006"* *var = "star_density"* *axis = 0* * * *pf = load(fName)* *pf.h* * * *pc = PlotCollection(pf)* *p = pc.add_projection(var,axis)* *#p.modify["particles"](1.0)* * * *radius = .02;* * * *pc.set_xlim(.5-radius,.5+radius)* *pc.set_ylim(.5-radius,.5+radius)* * * *pc.save(fName)* -- Munier A. Salem // 845.489.6450

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Re: [yt-users] yt-users Digest, Vol 57, Issue 7
by Anna Rosen Nov. 26, 2012

Nov. 26, 2012

Thanks, Andrew! It works now, I altered my yt-x86_64/src/yt-hg/yt/frontends/orion/fields.py to match yours. Changing add_orion_field to add_field corrects the problem. I'm not quite sure why though. On Nov 13, 2012, at 5:04 AM, yt-users-request(a)lists.spacepope.org wrote: > Send yt-users mailing list submissions to > yt-users(a)lists.spacepope.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org > or, via email, send a message with subject or body 'help' to > yt-users-request(a)lists.spacepope.org > > You can reach the person managing the list at > yt-users-owner(a)lists.spacepope.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of yt-users digest..." > > > Today's Topics: > > 1. Orion Derived Fields (Anna Rosen) > 2. Re: Orion Derived Fields (Andrew Myers) > 3. Re: Strange Behaviour in ProjectionPlot (Patrick Rieser) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 12 Nov 2012 16:04:00 -0800 > From: Anna Rosen <rosen(a)ucolick.org> > To: yt-users(a)lists.spacepope.org > Subject: [yt-users] Orion Derived Fields > Message-ID: <64BC5460-361B-441A-A676-CE433376AF3B(a)ucolick.org> > Content-Type: text/plain; charset=us-ascii > > Hi all, > > I am unable to access the derived fields written for Orion such as temperature, pressure, etc. > The definitions are these fields are located here: yt-x86_64/src/yt-hg/yt/frontends/orion/fields.py > > This is the error that I get if I try to access temperature: > > In [14]: mi,ma= dd.quantities["Extrema"]("Temperature")[0] > --------------------------------------------------------------------------- > KeyError Traceback (most recent call last) > <ipython-input-14-c8df716340ab> in <module>() > ----> 1 mi,ma= dd.quantities["Extrema"]("Temperature")[0] > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in __call__(self, *args, **kwargs) > 90 self._data_source.pf.h.io) > 91 if lazy_reader and not self.force_unlazy: > ---> 92 return self._call_func_lazy(args, kwargs) > 93 else: > 94 return self._call_func_unlazy(args, kwargs) > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in _call_func_lazy(self, args, kwargs) > 97 self.retvals = [ [] for i in range(self.n_ret)] > 98 for gi,g in enumerate(self._get_grids()): > ---> 99 rv = self.func(GridChildMaskWrapper(g, self._data_source), *args, **kwargs) > 100 if not iterable(rv): rv = (rv,) > 101 for i in range(self.n_ret): self.retvals[i].append(rv[i]) > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in _Extrema(data, fields, non_zero, filter) > 586 mins, maxs = [], [] > 587 for field in fields: > --> 588 if data[field].size < 1: > 589 mins.append(1e90) > 590 maxs.append(-1e90) > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in __getitem__(self, item) > 58 def __getitem__(self, item): > 59 if item not in self.local_cache: > ---> 60 data = self.data_source._get_data_from_grid(self.grid, item) > 61 self.local_cache[item] = data > 62 return self.local_cache[item] > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in save_state(self, grid, field, *args, **kwargs) > 89 old_keys = grid.field_data.keys() > 90 grid.field_parameters = self.field_parameters > ---> 91 tr = func(self, grid, field, *args, **kwargs) > 92 grid.field_parameters = old_params > 93 grid.field_data = YTFieldData( [(k, grid.field_data[k]) for k in old_keys] ) > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in _get_data_from_grid(self, grid, field) > 2555 return na.array([f[i,:][pointI] for i in range(3)]) > 2556 else: > -> 2557 tr = grid[field] > 2558 if tr.size == 1: # dx, dy, dz, cellvolume > 2559 tr = tr * na.ones(grid.ActiveDimensions, dtype='float64') > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in __getitem__(self, key) > 155 """ > 156 if not self.field_data.has_key(key): > --> 157 self.get_data(key) > 158 return self.field_data[key] > 159 > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in get_data(self, field, convert) > 198 else: raise > 199 else: > --> 200 self._generate_field(field) > 201 return self.field_data[field] > 202 > > /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in _generate_field(self, field) > 145 self[field] = self.pf.field_info[field](self) > 146 else: # Can't find the field, try as it might > --> 147 raise exceptions.KeyError(field) > 148 > 149 def has_key(self, key): > > KeyError: 'Temperature' > > Thanks! > > Anna Rosen > Graduate Student > UCSC, Astronomy & Astrophysics > rosen(a)ucolick.org > > > > > > ------------------------------ > > Message: 2 > Date: Mon, 12 Nov 2012 18:30:14 -0800 > From: Andrew Myers <atmyers(a)berkeley.edu> > To: Discussion of the yt analysis package > <yt-users(a)lists.spacepope.org> > Subject: Re: [yt-users] Orion Derived Fields > Message-ID: > <CAB7F9=PN4DL9NfHnj0gBaUBdBkewVGhx7+_g1o5ewwn7Mm+TXg(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi Anna, > > Check out this<https://bitbucket.org/atmyers/yt/changeset/53fa42c3dbc9c0228203900a1b1a169e…>changeset, > which I think fixes the problem. I'm not 100% sure that I > understand the distinction between "fallback" and "known" fields, but I can > confirm that with those changes all the basic orion fields work. > > -Andrew > > On Mon, Nov 12, 2012 at 4:04 PM, Anna Rosen <rosen(a)ucolick.org> wrote: > >> Hi all, >> >> I am unable to access the derived fields written for Orion such as >> temperature, pressure, etc. >> The definitions are these fields are located here: >> yt-x86_64/src/yt-hg/yt/frontends/orion/fields.py >> >> This is the error that I get if I try to access temperature: >> >> In [14]: mi,ma= dd.quantities["Extrema"]("Temperature")[0] >> --------------------------------------------------------------------------- >> KeyError Traceback (most recent call last) >> <ipython-input-14-c8df716340ab> in <module>() >> ----> 1 mi,ma= dd.quantities["Extrema"]("Temperature")[0] >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc >> in __call__(self, *args, **kwargs) >> 90 self._data_source.pf.h.io) >> 91 if lazy_reader and not self.force_unlazy: >> ---> 92 return self._call_func_lazy(args, kwargs) >> 93 else: >> 94 return self._call_func_unlazy(args, kwargs) >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc >> in _call_func_lazy(self, args, kwargs) >> 97 self.retvals = [ [] for i in range(self.n_ret)] >> 98 for gi,g in enumerate(self._get_grids()): >> ---> 99 rv = self.func(GridChildMaskWrapper(g, >> self._data_source), *args, **kwargs) >> 100 if not iterable(rv): rv = (rv,) >> 101 for i in range(self.n_ret): >> self.retvals[i].append(rv[i]) >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc >> in _Extrema(data, fields, non_zero, filter) >> 586 mins, maxs = [], [] >> 587 for field in fields: >> --> 588 if data[field].size < 1: >> 589 mins.append(1e90) >> 590 maxs.append(-1e90) >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc >> in __getitem__(self, item) >> 58 def __getitem__(self, item): >> 59 if item not in self.local_cache: >> ---> 60 data = self.data_source._get_data_from_grid(self.grid, >> item) >> 61 self.local_cache[item] = data >> 62 return self.local_cache[item] >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in >> save_state(self, grid, field, *args, **kwargs) >> 89 old_keys = grid.field_data.keys() >> 90 grid.field_parameters = self.field_parameters >> ---> 91 tr = func(self, grid, field, *args, **kwargs) >> 92 grid.field_parameters = old_params >> 93 grid.field_data = YTFieldData( [(k, grid.field_data[k]) >> for k in old_keys] ) >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in >> _get_data_from_grid(self, grid, field) >> 2555 return na.array([f[i,:][pointI] for i in range(3)]) >> 2556 else: >> -> 2557 tr = grid[field] >> 2558 if tr.size == 1: # dx, dy, dz, cellvolume >> 2559 tr = tr * na.ones(grid.ActiveDimensions, >> dtype='float64') >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in >> __getitem__(self, key) >> 155 """ >> 156 if not self.field_data.has_key(key): >> --> 157 self.get_data(key) >> 158 return self.field_data[key] >> 159 >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in >> get_data(self, field, convert) >> 198 else: raise >> 199 else: >> --> 200 self._generate_field(field) >> 201 return self.field_data[field] >> 202 >> >> /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in >> _generate_field(self, field) >> 145 self[field] = self.pf.field_info[field](self) >> 146 else: # Can't find the field, try as it might >> --> 147 raise exceptions.KeyError(field) >> 148 >> 149 def has_key(self, key): >> >> KeyError: 'Temperature' >> >> Thanks! >> >> Anna Rosen >> Graduate Student >> UCSC, Astronomy & Astrophysics >> rosen(a)ucolick.org >> >> >> >> _______________________________________________ >> yt-users mailing list >> yt-users(a)lists.spacepope.org >> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org >> >

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error on hierarchy access.
by david collins Nov. 21, 2012

Nov. 21, 2012

Is this behavior familiar to anyone? I've done this with a fresh build and one from a few months ago. The set was generated with the latest build of enzo. With a set generated from an earlier enzo build, I can read the set just fine. Thanks! d. >>> from yt.mods import * >>> pf = load('/Users/dccollins/Enzo/unstable/run/GravitySolver/GravityTest/./DD0000/data0000') >>> pf.h Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/dccollins/local2/src/yt-hg/yt/data_objects/static_output.py", line 189, in hierarchy self, data_style=self.data_style) File "/Users/dccollins/local2/src/yt-hg/yt/frontends/enzo/data_structures.py", line 218, in __init__ AMRHierarchy.__init__(self, pf, data_style) File "/Users/dccollins/local2/src/yt-hg/yt/data_objects/hierarchy.py", line 62, in __init__ self._count_grids() File "/Users/dccollins/local2/src/yt-hg/yt/frontends/enzo/data_structures.py", line 240, in _count_grids self._guess_data_style(self.pf.dimensionality, test_grid, test_grid_id) File "/Users/dccollins/local2/src/yt-hg/yt/frontends/enzo/data_structures.py", line 243, in _guess_data_style if test_grid[0] != os.path.sep: TypeError: 'NoneType' object is not subscriptable -- Sent from my computer.

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OpenSuse Install Troubles
by Nicholas Earl Nov. 20, 2012

Nov. 20, 2012

Hey all, I've been trying to stick yt on an opensuse box, and I've run into a kind of funky error when it attempts to install mercurial-2.2.2. I just wanted to see if perhaps anyone has hit this wall before? user_base = getuserbase() # this will also set USER_BASE File "/home/nearl/yt-x86_64/lib/python2.7/site.py", line 243, in getuserbase USER_BASE = get_config_var('userbase') File "/home/nearl/yt-x86_64/lib/python2.7/sysconfig.py", line 520, in get_config_var return get_config_vars().get(name) File "/home/nearl/yt-x86_64/lib/python2.7/sysconfig.py", line 419, in get_config_vars _init_posix(_CONFIG_VARS) File "/home/nearl/yt-x86_64/lib/python2.7/sysconfig.py", line 287, in _init_posix raise IOError(msg) IOError: invalid Python installation: unable to open /home/nearl/yt-x86_64/lib/python2.7/config/Makefile (No such file or directory) The directory /config does not exist. I've attempted to install the python-devel package, along with the python-setuptools-devel package, but they didn't seem to help at all. I haven't worked with opensuse before, so it's quite possible that this may be a platform-dependent issue. Any suggestions would be greatly appreciated! Nick

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Fwd: cylindrical coordinates in Athena
by Kaitlin Kratter Nov. 16, 2012

Nov. 16, 2012

Hi, I gather that cylindrical geometries aren't supported. Is it possible to force yt to read in cylindrical coordinates as though they were cartesian? When I try to load an athena vtk in cylindrical, I get: In [32]: pf = load("cyl_disk.0001.vtk") yt : [INFO ] 2012-11-15 15:31:26,443 Temporarily setting domain_right_edge = -domain_left_edge. This will be corrected automatically if it is not the case. yt : [INFO ] 2012-11-15 15:31:26,445 Parameters: current_time = 0.001080635 yt : [INFO ] 2012-11-15 15:31:26,445 Parameters: domain_dimensions = [ -37 128 -2147483648] yt : [INFO ] 2012-11-15 15:31:26,445 Parameters: domain_left_edge = [ 1. -1.570796 0. ] yt : [INFO ] 2012-11-15 15:31:26,445 Parameters: domain_right_edge = [-1. 1.570796 -0. ] yt : [INFO ] 2012-11-15 15:31:26,445 Parameters: cosmological_simulation = 0.0 This is a 256 by 128 grid, and the dimensions should be -pi/2, pi/2 and 1, 15. Thanks, Kaitlin

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unsubscribe
by Wim Zwitser Nov. 16, 2012

Nov. 16, 2012

1 0

Runtime Error: unitsystem cgs unrecognized
by Patrick Rieser Nov. 16, 2012

Nov. 16, 2012

Hey all! When I try to call my own added field magB I get a runtime error saying that the cgs unitsystem is unrecognized. When I insert pf["unitsystem"] == "cgs" directly before the call where the traceback starts, it returns true. Best wishes, Patrick I add the field with: def _magB(field,data): return (na.sqrt(data["Bx"]**2 + data["By"]**2 + data["Bz"]**2)) add_field("magB", function=_magB, units=r"\rm{Gauss}") and then call: rad_profile.add_fields("magB") Traceback: File "rad_profile_magb.py", line 100, in <module> rad_profile.add_fields("magB") File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", line 170, in add_fields self._unlazy_add_fields(fields, weight, accumulation) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", line 151, in _unlazy_add_fields accumulation, self._args, check_cut = False) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", line 55, in save_state tr = func(*args, **kwargs) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", line 264, in _bin_field source_data = self._get_field(source, field, check_cut) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", line 204, in _get_field data.append(source[field][pointI].ravel().astype('float64')) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 328, in __getitem__ self.get_data(key) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 2593, in get_data if self._generate_field(field): File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 358, in _generate_field self[field] = self.pf.field_info[field](self) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/field_info_container.py", line 378, in __call__ dd = self._function(self, data) File "/home/patrick/Auswertung/yt-bit/Plot/common_fields.py", line 7, in _magB return (na.sqrt(data["Bx"]**2 + data["By"]**2 + data["Bz"]**2)) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 328, in __getitem__ self.get_data(key) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 2593, in get_data if self._generate_field(field): File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 358, in _generate_field self[field] = self.pf.field_info[field](self) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/field_info_container.py", line 378, in __call__ dd = self._function(self, data) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/frontends/flash/fields.py", line 357, in _Bx factor = GetMagRescalingFactor(data.pf) File "/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/frontends/flash/fields.py", line 353, in GetMagRescalingFactor "value %s is unrecognized" % pf['unitsystem']) RuntimeError: Runtime parameter unitsystem withvalue cgs is unrecognized

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Strange Behaviour in ProjectionPlot
by Patrick Rieser Nov. 13, 2012

Nov. 13, 2012

Hey all, So I still get some strange behaviour with the ProjectionPlot. If I use the projection.set_width() with the clumps callback method I get the real image shrinked inside the the plot window. Strange thing is, that it grows with each step! Here is a demonstration how it looks (you have to look closely as it doesn't grow that much each step): http://www.flickr.com/photos/87912862@N05/sets/72157631990474435/ If I don't use the set_width() then the image itself looks fine, but the scale on the axis grows with each step. So it seems to be the same error than with fixed width. Best wishes, Patrick Here is the code that I am using: # ID is just a list of tuples with clumps/their position in an array # sim_files and clump_files is a list containing the filenames # get_myclump() simply returns a specific clump for j, series in enumerate(ID): for i in series: pf = load(sim_files[i[0]]) myclump = get_myclump(clump_files[i[0]], i[1]) pc = ProjectionPlot(pf, axis, my_field, center = pf.domain_center, weight_field = my_wfield) pc.set_width(28, "mpc") pc.annotate_text([0.0,1.05], "Clump %s" % j) if redshift: pc.annotate_text([0.917,1.05], "z = %0.4f" % pf.current_redshift) if grid: pc.annotate_grids() if fix_scale: pc.set_zlim(my_field,boundaries[0],boundaries[1]) pc.set_cmap("Density", "idl01") pc.annotate_clumps(myclump) pc.save('%s/Clump_%s_File_%s_Nr_%s_%s_Projection.png' % (myBASEDIR, j, i[0], i[1], axis))

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Orion Derived Fields
by Anna Rosen Nov. 13, 2012

Nov. 13, 2012

Hi all, I am unable to access the derived fields written for Orion such as temperature, pressure, etc. The definitions are these fields are located here: yt-x86_64/src/yt-hg/yt/frontends/orion/fields.py This is the error that I get if I try to access temperature: In [14]: mi,ma= dd.quantities["Extrema"]("Temperature")[0] --------------------------------------------------------------------------- KeyError Traceback (most recent call last) <ipython-input-14-c8df716340ab> in <module>() ----> 1 mi,ma= dd.quantities["Extrema"]("Temperature")[0] /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in __call__(self, *args, **kwargs) 90 self._data_source.pf.h.io) 91 if lazy_reader and not self.force_unlazy: ---> 92 return self._call_func_lazy(args, kwargs) 93 else: 94 return self._call_func_unlazy(args, kwargs) /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in _call_func_lazy(self, args, kwargs) 97 self.retvals = [ [] for i in range(self.n_ret)] 98 for gi,g in enumerate(self._get_grids()): ---> 99 rv = self.func(GridChildMaskWrapper(g, self._data_source), *args, **kwargs) 100 if not iterable(rv): rv = (rv,) 101 for i in range(self.n_ret): self.retvals[i].append(rv[i]) /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in _Extrema(data, fields, non_zero, filter) 586 mins, maxs = [], [] 587 for field in fields: --> 588 if data[field].size < 1: 589 mins.append(1e90) 590 maxs.append(-1e90) /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.pyc in __getitem__(self, item) 58 def __getitem__(self, item): 59 if item not in self.local_cache: ---> 60 data = self.data_source._get_data_from_grid(self.grid, item) 61 self.local_cache[item] = data 62 return self.local_cache[item] /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in save_state(self, grid, field, *args, **kwargs) 89 old_keys = grid.field_data.keys() 90 grid.field_parameters = self.field_parameters ---> 91 tr = func(self, grid, field, *args, **kwargs) 92 grid.field_parameters = old_params 93 grid.field_data = YTFieldData( [(k, grid.field_data[k]) for k in old_keys] ) /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in _get_data_from_grid(self, grid, field) 2555 return na.array([f[i,:][pointI] for i in range(3)]) 2556 else: -> 2557 tr = grid[field] 2558 if tr.size == 1: # dx, dy, dz, cellvolume 2559 tr = tr * na.ones(grid.ActiveDimensions, dtype='float64') /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in __getitem__(self, key) 155 """ 156 if not self.field_data.has_key(key): --> 157 self.get_data(key) 158 return self.field_data[key] 159 /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in get_data(self, field, convert) 198 else: raise 199 else: --> 200 self._generate_field(field) 201 return self.field_data[field] 202 /home1/arosen2/yt-x86_64/src/yt-hg/yt/data_objects/grid_patch.pyc in _generate_field(self, field) 145 self[field] = self.pf.field_info[field](self) 146 else: # Can't find the field, try as it might --> 147 raise exceptions.KeyError(field) 148 149 def has_key(self, key): KeyError: 'Temperature' Thanks! Anna Rosen Graduate Student UCSC, Astronomy & Astrophysics rosen(a)ucolick.org

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Title Callback in PlotCollection
by Patrick Rieser Nov. 8, 2012

Nov. 8, 2012

Hey all! I got a problem when using the title callback in a plot collection. It seems to restrict the plot only to the image and "cut off" the top, where the title should be. When I use pc.plots[0].modify["title"]("sometitle") applied and then saved with pc.save("somename") nothing appears on the top, but the image remains as if I never applied anything. Here is an example (with the title callback applied, but it doesn't show up): http://www.flickr.com/photos/87912862@N05/8166752608/in/photostream Best wishes, Patrick

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Angular momentum sign error?
by Elizabeth Tasker Nov. 8, 2012

Nov. 8, 2012

Hi everyone, I think there is a small error in the angular momentum calculation. Below, L is calculated as: L = velocity x radius def _SpecificAngularMomentumX(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return yv*rv[2,:] - zv*rv[1,:] def _SpecificAngularMomentumY(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return -(xv*rv[2,:] - zv*rv[0,:]) def _SpecificAngularMomentumZ(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return xv*rv[1,:] - yv*rv[0,:] but it should be: L = radius x velocity This leads to a sign error (and gives me a whole load of retrograde GMCs!) def _SpecificAngularMomentumX(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return zv*rv[1,:] - yv*rv[2,:] def _SpecificAngularMomentumY(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return -(zv*rv[0,:] - xv*rv[2,:]) def _SpecificAngularMomentumZ(field, data): xv, yv, zv = obtain_velocities(data) rv = obtain_rvec(data) return yv*rv[0,:] - xv*rv[1,:] Does that look right? Elizabeth ------------------------------------------------------ Elizabeth TASKER Assistant Professor Physics Department, Faculty of Science Hokkaido University Sapporo, Japan tasker(a)astro1.sci.hokudai.ac.jp http://astro3.sci.hokudai.ac.jp/~tasker/ ------------------------------------------------------

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running yt on Ranger
by Yuan Li Nov. 5, 2012

Nov. 5, 2012

Hi all, I am having some trouble running yt on Ranger, and I am confused because a couple of other people load the same modules and they can run yt without any problem. Right now, I can only run yt after I activate it (source ~/source/yt-x86_64/bin/activate). If I do not activate yt, and I try to import yt in python (I use the one that came with yt): from yt.mods import * I get this error: ImportError: libpng15.so.15: cannot open shared object file: No such file or directory The module I load before running yt is this: module swap intel gcc/4.4.3 which inactivates these modules: Inactive Modules: 1) mvapich-devel 2) acml 3) hdf5 In my .bashrc file, I have: export PATH=$PATH:/share/home/01688/yuanli/source/yt-x86_64/bin export PATH=$PATH:/share/home/01688/yuanli/source/yt-x86_64/lib/python2.7/site-packages Hope there is an easy fix. Thank you! Yuan

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