healpy tutorial — healpy 1.18.1.dev9+gdd0506a.d20241206 …
Learn how to use healpy, a Python package for manipulating and analyzing Healpix maps of the sky. See how to set NSIDE, ordering, read and write maps, and perform basic operations.
Welcome to the healpy documentation — healpy …
healpy is based on the HEALPix scheme and provides utilities to manipulate, transform, visualize and analyze maps on the sky. Learn how to install, use and cite healpy and HEALPix, and explore the tutorial and reference documentation.
Power Spectrum of a CMB map with healpy · GitHub
import healpy as hp: #Joint Planck and WMAP9 CMB Map Reconstruction using LGMCA: #available at http://www.cosmostat.org/research/cmb/planck_wpr1/ wmap = hp.read_map('WPR1_CMB_muK.fits') #to watch the map: #hp.mollview(wmap, title='CMB', unit=r'$\mu$K', min=-500,max=500) LMAX = 2048: cl = hp.anafast(wmap, lmax=LMAX) ell = np.arange(len(cl)) plt ...
Read and process Planck CMB power spectra with healpy
2020年9月30日 · In this tutorial we will load CMB power spectra generated by the cosmological parameters measured by Planck, we will create a realization of the Spherical Harmonics coefficients \(a_{\ell m}\), save it to disk, and use them to create maps at different resolutions.
healpy.visufunc.mollview — healpy …
Plot a healpix map (given as an array) in Mollweide projection. Parameters: map float, array-like or None. An array containing the map, supports masked maps, see the ma function. If None, will display a blank map, useful for overplotting. fig int or None, optional. The figure number to use. Default: create a new figure. rot scalar or sequence ...
Understanding lmax for anafast/synfast · Issue #588 · healpy/healpy
2019年11月21日 · I was wondering if you could help me better figure out what Healpy is really doing with lmax. I have A CMB map for example, going up to Nside = 8192. Using Anafast I compute its power spectrum until lmax = 100. Then, I plug this power spectrum into Synfast to generate a new CMB map.
healpy/healpy: Python healpix maps tools - GitHub
read and write HEALPix maps to disk in FITS format; upgrade and downgrade the resolution of existing HEALPix maps; visualize maps in Mollweide, Gnomonic and Cartographic projections; transform maps to Spherical Harmonics space and back using multi-threaded C++ routines; compute Auto and Cross Power Spectra from maps and create map realizations ...
Compute the Planck CMB temperature power spectrum with healpy …
2021年2月28日 · In this notebook we will load the Planck CMB-only temperature map and try to reproduce the Planck CMB power spectrum in temperature just using healpy. First we load the Planck data release 3 CMB-only temperature produced by Commander by separating it out from galactic foregrounds:
(PDF) HEALPix and healpy -- with examples - ResearchGate
2020年2月21日 · We used python implementation of HEALPix, healpy for creating and manipulating CMB maps. Maps are simply numpy arrays, where each array element refers to a location in the sky as defined by...
Producing E and B mode maps using CAMB and Healpy
2015年12月8日 · I have been trying to make E and B mode maps using CAMB and healpy, however what I have produced so far doesn't really look like much. I am using CAMB to produce simulated maps at the following link: http://lambda.gsfc.nasa.gov/toolbox/tb_camb_form.cfm , and I am keeping all the default parameters other than checking the box for tensor cl's and ...