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- Display at least three significant figures in the credible area shown in the
plots produced by the command line tool ``ligo-skymap-plot`` so that a
nonzero value is printed if the area is less than 1 deg2.
- Adjust boundary conditions for linear interpolation of credible areas so that
nonzero values are reported when the credible region is smaller than one
pixel.
- Some improvements to plot markers:
- The Earth plot marker is now unfilled by default. It is no longer necessary
to specify ``markerfacecolor='none'``.
- Added markers for the Sun and Moon.
- Several improvements in ``ligo-skymap-from-samples``, including a speedup
from about 1 min to 20 s for an input of 10,000 samples on high core count
(up to 128 core) x86_64 machines:
- Parallelize the evaluation of the 2D KDE.
- Pre-whiten the data before clustering to avoid matrix inverses in an inner
loop. This speeds up the clustering by about 2x.
- Replace our pure Python implementation of the k-means assignment step with
the Cython implementation from ``scipy.cluster.vq``.
- Add a progress bar for the HEALPix adaptive refinement step.
- Record the runtime in the output FITS file's header.
- Reuse the Python mulitprocessing pool to avoid the overhead of spawning
new workers for each parallel section.
- Add chunk size heuristic to reduce overhead of parallel maps using Python
mulitprocessing.