Re: [yt-users] [enzo-dev] A lightcone problem

Thanks Britton. I am attaching the lightcone solution file. Cheers, GB # parameter_filename = Example_Cosmology_Sim.param # Slice Dataset Redshift depth/box width/degree axis center 0000 DD0272/DD0272 0.099445 1.008644 0.079617 0 0.990649 0.013154 0.723866 0001 DD0278/DD0278 0.077086 0.988231 0.062013 2 0.805856 0.062935 0.861305 0002 DD0284/DD0284 0.055391 0.968416 0.044766 0 0.670546 0.643445 0.723627 0003 DD0290/DD0290 0.034326 0.949171 0.027864 0 0.611051 0.491222 0.350996 0004 DD0296/DD0296 0.013859 0.647291 0.011297 2 0.353542 0.185281 0.792768 On 28 Oct 2014, at 02:04, Britton Smith wrote:

Hi GB,

I am forwarding this over to the yt-users list as this is a yt issue and not an enzo issue. I am unable to reproduce the issue you're seeing when I use the light cone cookbook recipe. I'm guessing that you're running into a corner case with the light cone generator that is specific to your simulation data. Could you send along the light cone solution file? It should be named lightcone.dat. There might be some clues in there.

Britton

---------- Forwarded message ---------- From: Gongbo Zhao Date: Thu, Oct 23, 2014 at 11:35 PM Subject: [enzo-dev] A lightcone problem To: brittonsmith@gmail.com Cc: "enzo-dev@googlegroups.com"

Hi Britton,

I used the latest yt (version Version = 3.1-dev; Changeset = bf8f9f98b34a (yt) tip) but I am having problems with the lightcone analysis. When I ran it using the following script,

...

from yt.analysis_modules.cosmological_observation.api import \ LightCone

lc = LightCone('Example_Cosmology_Sim.param', 'Enzo', 0., 0.1) lc.calculate_light_cone_solution(seed=123456789, filename='lightcone.dat') field = 'density' field_of_view = (600.0, "arcmin") resolution = (60.0, "arcsec") lc.project_light_cone(field_of_view, resolution, field, weight_field=None, save_stack=True, save_slice_images=True)

I got these error messages,

...

yt : [INFO ] 2014-10-24 04:29:36,439 Parameters: domain_dimensions = [128 128 128] yt : [INFO ] 2014-10-24 04:29:36,440 Parameters: domain_left_edge = [ 0. 0. 0.] yt : [INFO ] 2014-10-24 04:29:36,440 Parameters: domain_right_edge = [ 1. 1. 1.] yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: initial_time = 1.1703706995e+15 s yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: final_time = 4.31424173577e+17 s yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: stop_cycle = 100000 yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: cosmological_simulation = 1 yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: box_size = 64.0 Mpccm/h yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: omega_lambda = 0.73 yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: omega_matter = 0.27 yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: hubble_constant = 0.71 yt : [INFO ] 2014-10-24 04:29:36,441 Parameters: initial_redshift = 60.0 yt : [INFO ] 2014-10-24 04:29:36,442 Parameters: final_redshift = 0.0 yt : [INFO ] 2014-10-24 04:29:36,442 Total datasets: 313. yt : [INFO ] 2014-10-24 04:29:49,842 create_cosmology_splice: Used 5 data dumps to get from z = 0.100000 to 0.000000. yt : [ERROR ] 2014-10-24 04:29:49,978 Warning: box fraction required to go from z = 0.099445 to 0.077086 is 1.008644 yt : [ERROR ] 2014-10-24 04:29:49,978 Full box delta z is 0.022168, but it is 0.022359 to the next data dump. yt : [INFO ] 2014-10-24 04:29:50,042 Saving light cone solution to lightcone.dat. yt : [INFO ] 2014-10-24 04:29:50,217 Parameters: current_time = 272.816550757 yt : [INFO ] 2014-10-24 04:29:50,217 Parameters: domain_dimensions = [128 128 128] yt : [INFO ] 2014-10-24 04:29:50,217 Parameters: domain_left_edge = [ 0. 0. 0.] yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: domain_right_edge = [ 1. 1. 1.] yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: cosmological_simulation = 1 yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: current_redshift = 0.0994652856936 yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: omega_lambda = 0.73 yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: omega_matter = 0.27 yt : [INFO ] 2014-10-24 04:29:50,218 Parameters: hubble_constant = 0.71 yt : [INFO ] 2014-10-24 04:29:50,220 Making projection at z = 0.099445 from DD0272/DD0272. Parsing Hierarchy 100% ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Time: 00:00:00 yt : [INFO ] 2014-10-24 04:29:51,714 Gathering a field list (this may take a moment.) yt : [INFO ] 2014-10-24 04:29:52,622 Loading field plugins. yt : [INFO ] 2014-10-24 04:29:52,622 Loaded angular_momentum (8 new fields) yt : [INFO ] 2014-10-24 04:29:52,622 Loaded astro (14 new fields) yt : [INFO ] 2014-10-24 04:29:52,623 Loaded cosmology (20 new fields) yt : [INFO ] 2014-10-24 04:29:52,623 Loaded fluid (56 new fields) yt : [INFO ] 2014-10-24 04:29:52,624 Loaded fluid_vector (88 new fields) yt : [INFO ] 2014-10-24 04:29:52,624 Loaded geometric (102 new fields) yt : [INFO ] 2014-10-24 04:29:52,624 Loaded local (102 new fields) yt : [INFO ] 2014-10-24 04:29:52,625 Loaded magnetic_field (108 new fields) yt : [INFO ] 2014-10-24 04:29:52,625 Loaded my_plugins (108 new fields) yt : [INFO ] 2014-10-24 04:29:52,625 Loaded species (110 new fields) Traceback (most recent call last): File "lightcone.py", line 13, in <module> save_slice_images=True) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/analysis_modules/cosmological_observation/light_cone/light_cone.py", line 322, in project_light_cone weight_field=weight_field) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 267, in barrierize return func(*args, **kwargs) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/analysis_modules/cosmological_observation/light_cone/light_cone_projection.py", line 84, in _light_cone_projection data_source=cut_region) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/data_objects/construction_data_containers.py", line 245, in __init__ self.get_data(field) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/data_objects/construction_data_containers.py", line 285, in get_data self._initialize_chunk(chunk, tree) File "/opt/apps/enzo/new/yt-x86_64/src/yt-hg/yt/data_objects/construction_data_containers.py", line 369, in _initialize_chunk tree.initialize_chunk(i1, i2, ilevel) File "QuadTree.pyx", line 330, in yt.utilities.lib.QuadTree.QuadTree.initialize_chunk (yt/utilities/lib/QuadTree.c:4710) ValueError: Buffer has wrong number of dimensions (expected 1, got 2)

It seems to be a buffer dimension problem?

Thanks, GB

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