QH6214 qhull input error: not enough points(2) to construct initial simplex (need 3)

Hi Douglas,

One of my data set produced the error below. It’s probaly caused by HDBSCAN not returning clusters, as it goes away if I enter my own cluster labels via the metadata file.

Traceback (most recent call last):
  File "/Users/detours/ai/ciga-resnet18/code/python/pix-plot-master/pixplot/pixplot.py", line 1383, in <module>
    parse()
  File "/Users/detours/ai/ciga-resnet18/code/python/pix-plot-master/pixplot/pixplot.py", line 1380, in parse
    process_images(**config)
  File "/Users/detours/ai/ciga-resnet18/code/python/pix-plot-master/pixplot/pixplot.py", line 134, in process_images
    get_manifest(**kwargs)
  File "/Users/detours/ai/ciga-resnet18/code/python/pix-plot-master/pixplot/pixplot.py", line 424, in get_manifest
    'default_hotspots': get_hotspots(vecs=read_json(layouts['umap']['layout'], **kwargs), **kwargs),
  File "/Users/detours/ai/ciga-resnet18/code/python/pix-plot-master/pixplot/pixplot.py", line 1206, in get_hotspots
    hull = ConvexHull(positions)
  File "qhull.pyx", line 2433, in scipy.spatial.qhull.ConvexHull.__init__
  File "qhull.pyx", line 356, in scipy.spatial.qhull._Qhull.__init__
scipy.spatial.qhull.QhullError: QH6214 qhull input error: not enough points(2) to construct initial simplex (need 3)

While executing:  | qhull i Qt
Options selected for Qhull 2019.1.r 2019/06/21:
  run-id 771789821  incidence  Qtriangulate  _pre-merge  _zero-centrum
  _maxoutside  0

Best,

Vincent