New issue 828: Clump finder raises a NotImplementedError https://bitbucket.org/yt_analysis/yt/issue/828/clump-finder-raises-a-notimpl... Nathan Goldbaum: This example script comes from the docs: ``` #!python from yt.mods import * from yt.analysis_modules.level_sets.api import * pf = load("IsolatedGalaxy/galaxy0030/galaxy0030") data_source = pf.disk([0.5, 0.5, 0.5], [0., 0., 1.], (8., 'kpc'), (1., 'kpc')) c_min = 10**np.floor(np.log10(data_source['density']).min() ) c_max = 10**np.floor(np.log10(data_source['density']).max()+1) function = 'self.data[\'Density\'].size > 20' master_clump = Clump(data_source, None, 'density', function=function) find_clumps(master_clump, c_min, c_max, 2.0) leaf_clumps = get_lowest_clumps(master_clump) prj = ProjectionPlot(pf, 2, 'density', center='c', width=(20,'kpc')) prj.annotate_clumps(leaf_clumps) prj.save('clumps') ``` It currently fails with the following traceback: ``` Traceback (most recent call last): File "temp.py", line 13, in <module> find_clumps(master_clump, c_min, c_max, 2.0) File "/Users/goldbaum/Documents/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 171, in find_clumps clump.find_children(min_val) File "/Users/goldbaum/Documents/yt-hg/yt/analysis_modules/level_sets/clump_handling.py", line 110, in find_children nj, cids = identify_contours(self.data, self.field, min_val, max_val) File "/Users/goldbaum/Documents/yt-hg/yt/analysis_modules/level_sets/contour_finder.py", line 36, in identify_contours for (g, node, (sl, dims, gi)) in data_source.tiles.slice_traverse(): File "/Users/goldbaum/Documents/yt-hg/yt/utilities/amr_kdtree/amr_kdtree.py", line 189, in slice_traverse raise NotImplementedError NotImplementedError ```