gaussian kernel - Githubissues

IAOCEA / healpix-convolution

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gaussian kernel #5

Closed keewis closed 3 months ago

keewis commented 3 months ago

Building on top of the neighbours search and the distance calculation, adds a function to compute gaussian kernels from cell ids.

Intended features:

[ ] speed and correctness (verify by comparing with healpy's smoothing function)
[ ] ~allow convolving data that does not cover the entire sphere~ (this will take a lot more effort, so I'll push that to a different PR)
[ ] use dask to allow computing the kernel without running out of memory

keewis commented 3 months ago

dask-awareness and subdomain convolution seem like bigger tasks, so I'll merge this and revisit these two items in new PRs.

The tests are not quite sufficient to verify that it is, indeed, a gaussian kernel we got (right now it's simply checking that we got a normalized kernel). I'm still trying to find a way to verify that without having to compare with a pre-computed kernel.