Christoph Deil
Christoph Deil
It's nice that the chi^2 and likelihood fit statistics have the `default_errordef` so the user doesn't have to remember to set `Minuit.error_def = 0.5` for likelihood fits. Would it be...
I just read through the tutorial and I think maybe one aspect of the `probfit` API could be improved. At the moment there are `try_uml` and `try_binlh` functions that evaluate...
At the moment the tutorial shows that it is possible to draw the distributions and data yourself nicely be getting arrays like this: ``` ((data_edges, datay), (errorp, errorm), (total_pdf_x, total_pdf_y),...
We are shipping conda environments to users via `environment.yml` files like this (see [docs](https://docs.gammapy.org/0.9/getting-started.html#install): ``` curl -O https://gammapy.org/download/install/gammapy-0.9-environment.yml conda env create -f gammapy-0.9-environment.yml conda activate gammapy-0.9 ``` Now there are...
Currently we offer the same functionality via three interfaces (see [API](https://astropy-healpix.readthedocs.io/en/latest/api.html)). 1. Functions that use Numpy arrays or Quantity for angles. E.g. `lonlat_to_healpix(lon, lat, nside, return_offsets=False, order='ring')` 2. A HEALPix...
I remember that when first encountering HEALPix I was very confused, because it's a pixelisation and a WCS projection, and I couldn't find docs how to work with the HEALPix...
Currently we have `order : { ‘nested’ | ‘ring’ }`. In HEALPix, "order" is also often used for `k = log2(nside)`, so IMO this is confusing and should be changed....
In Gammapy we currently call [healpy.query_disc](http://healpy.readthedocs.io/en/latest/generated/healpy.query_disc.html) with both the `inclusive=True` and the `inclusive=False` option (see https://github.com/gammapy/gammapy/pull/1167#issuecomment-337156775). As discussed in https://github.com/astropy/astropy-healpix/issues/41 , probably we don't want to spend the time to...
One of the issues trying to switch Gammapy over to using astropy-healpix is that we call `ang2pix` with an array of nside values: https://gist.github.com/cdeil/754b76dc7f22511a5504fbbe74dccd62#file-gistfile1-txt-L989 Minimum test case that works with...
A big feature `astropy.healpix` that we're still missing is polygon query. The algorithm used in the C++ lib for HEALPix polygon query (and also disk query) is outlined in http://adsabs.harvard.edu/abs/2015A&A...580A.132R...