Everybody good afternoon, about Fortran kD Tree Setup, just to keep thread with my fix. 1) I downloaded the YT-DEV version and it didn't fix my problem. However, when I downloaded Forthon-0.8.7.tgz it did the trick. 2) Now I want to talk about another issue that I am getting. This time is with clumps. I am using an enzo data, with the code example in the YT documentation. this is my code: ----- import sys from yt.mods import * # set up our namespace from yt.analysis_modules.level_sets.api import * import yt.frontends.enzo.api yt.frontends.enzo.api.EnzoHierarchy._bn = "%s.grid.cpu%%04i" fn = "/astro/data/redshift0058/redshift0058" # parameter file to load field = "Density" step = 10.0 pf = load(fn) # load data c = [0.403290331 , 0.471765608 , 0.461319029] r = [0.411690331 , 0.480165608 , 0.469719029] l = [0.394890331 , 0.463365608 , 0.452919029] data_source = pf.h.region(c,l,r) c_min = 10**na.floor(na.log10(data_source[field]).min() ) c_max = 10**na.floor(na.log10(data_source[field]).max()+1) master_clump = Clump(data_source, None, field) find_clumps(master_clump, c_min, c_max, step) f = open('%s_clump_hierarchy.txt' % pf,'w') write_clump_hierarchy(master_clump, 0, f) f.close() f = open('%s_clumps.txt' % pf,'w') write_clumps(master_clump,0,f) f.close() --------- and I got the follow error. Traceback (most recent call last): File "/astro/py/clump.py", line 34, in <module> find_clumps(master_clump, c_min, c_max, step) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 181, in find_clumps find_clumps(clump, min_val*d_clump, max_val, d_clump) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 181, in find_clumps find_clumps(clump, min_val*d_clump, max_val, d_clump) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 190, in find_clumps elif (child._isValid()): File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 144, in _isValid self.function_value = eval(self.function) File "<string>", line 1, in <module> File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 94, in __call__ return self._call_func_unlazy(args, kwargs) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 119, in _call_func_unlazy retval = self.func(self._data_source, *args, **kwargs) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/derived_quantities.py", line 360, in _IsBound thermal = (data["ThermalEnergy"] * mass_to_use).sum() File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 327, in __getitem__ self.get_data(key) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 2536, in get_data if self._generate_field(field): File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 359, in _generate_field self[field] = self.pf.field_info[field](self) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/field_info_container.py", line 316, in __call__ dd = self._function(self, data) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/frontends/enzo/fields.py", line 134, in _ThermalEnergy return data["TotalEnergy"] File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 327, in __getitem__ self.get_data(key) File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 2536, in get_data if self._generate_field(field): File "/astro/yt-dev/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", line 363, in _generate_field raise KeyError(field) KeyError: 'TotalEnergy' I did it with the whole data (it took forever), however, I got the same exactly error. Anybody has an advice?? -- Francia F.R.