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healpy 1.20.0b2.dev15+gc0c378121 documentation

  • healpy tutorial
  • Other tutorials
    • Example of using the alpha argument for transparency
    • New visualization function tutorial
    • Example of generating a Gaussian beam in spherical harmonics space
    • harmonic_ud_grade vs ud_grade: A Focused Comparison
  • Installation procedure for Healpy
  • pixelfunc – Pixelisation related functions
    • healpy.pixelfunc.pix2ang
    • healpy.pixelfunc.pix2vec
    • healpy.pixelfunc.ang2pix
    • healpy.pixelfunc.vec2pix
    • healpy.pixelfunc.vec2ang
    • healpy.pixelfunc.ang2vec
    • healpy.pixelfunc.get_all_neighbours
    • healpy.pixelfunc.get_interp_weights
    • healpy.pixelfunc.get_interp_val
    • healpy.pixelfunc.nest2ring
    • healpy.pixelfunc.ring2nest
    • healpy.pixelfunc.reorder
    • healpy.pixelfunc.nside2npix
    • healpy.pixelfunc.npix2nside
    • healpy.pixelfunc.nside2order
    • healpy.pixelfunc.order2nside
    • healpy.pixelfunc.nside2resol
    • healpy.pixelfunc.nside2pixarea
    • healpy.pixelfunc.max_pixrad
    • healpy.pixelfunc.isnsideok
    • healpy.pixelfunc.isnpixok
    • healpy.pixelfunc.get_map_size
    • healpy.pixelfunc.get_min_valid_nside
    • healpy.pixelfunc.get_nside
    • healpy.pixelfunc.maptype
    • healpy.pixelfunc.ud_grade
    • healpy.pixelfunc.UNSEEN
    • healpy.pixelfunc.mask_bad
    • healpy.pixelfunc.mask_good
    • healpy.pixelfunc.ma
    • healpy.pixelfunc.fit_dipole
    • healpy.pixelfunc.fit_monopole
    • healpy.pixelfunc.remove_dipole
    • healpy.pixelfunc.remove_monopole
    • healpy.pixelfunc.get_interp_val
  • sphtfunc – Spherical harmonic transforms
    • healpy.sphtfunc.anafast
    • healpy.sphtfunc.map2alm
    • healpy.sphtfunc.map2alm_spin
    • healpy.sphtfunc.map2alm_lsq
    • healpy.sphtfunc.synfast
    • healpy.sphtfunc.alm2map
    • healpy.sphtfunc.alm2map_der1
    • healpy.sphtfunc.alm2map_spin
    • healpy.sphtfunc.smoothing
    • healpy.sphtfunc.smoothalm
    • healpy.sphtfunc.harmonic_ud_grade
    • healpy.sphtfunc.alm2cl
    • healpy.sphtfunc.synalm
    • healpy.sphtfunc.almxfl
    • healpy.sphtfunc.pixwin
    • healpy.sphtfunc.Alm
      • healpy.sphtfunc.Alm.getlm
      • healpy.sphtfunc.Alm.getidx
      • healpy.sphtfunc.Alm.getsize
      • healpy.sphtfunc.Alm.getlmax
    • healpy.sphtfunc.resize_alm
    • healpy.sphtfunc.gauss_beam
    • healpy.sphtfunc.beam2bl
    • healpy.sphtfunc.bl2beam
    • healpy.sphtfunc.effective_resolution_fwhm
  • visufunc – Visualisation
    • healpy.visufunc.mollview
    • healpy.visufunc.gnomview
    • healpy.visufunc.cartview
    • healpy.visufunc.orthview
    • healpy.visufunc.graticule
    • healpy.visufunc.delgraticules
    • healpy.visufunc.projplot
    • healpy.visufunc.projscatter
    • healpy.visufunc.projtext
  • newvisufunc – Experimental visualisation
    • healpy.newvisufunc.projview
    • healpy.newvisufunc.newprojplot
  • fitsfunc – FITS file related functions
    • healpy.fitsfunc.read_map
    • healpy.fitsfunc.write_map
    • healpy.fitsfunc.read_alm
    • healpy.fitsfunc.write_alm
    • healpy.fitsfunc.read_cl
    • healpy.fitsfunc.write_cl
    • healpy.fitsfunc.getformat
  • Pixel querying routines
    • healpy.query_disc
    • healpy.query_polygon
    • healpy.query_strip
    • healpy.boundaries
  • rotator – Rotation and geometry functions
    • healpy.rotator.Rotator
      • healpy.rotator.Rotator.I
      • healpy.rotator.Rotator.__call__
      • healpy.rotator.Rotator.angle_ref
      • healpy.rotator.Rotator.do_rot
      • healpy.rotator.Rotator.rotate_alm
      • healpy.rotator.Rotator.rotate_map_alms
      • healpy.rotator.Rotator.rotate_map_pixel
    • healpy.rotator.rotateVector
    • healpy.rotator.rotateDirection
    • healpy.rotator.vec2dir
    • healpy.rotator.dir2vec
    • healpy.rotator.angdist
  • projector – Spherical projections
    • healpy.projector.SphericalProj
      • healpy.projector.SphericalProj.ang2xy
      • healpy.projector.SphericalProj.get_center
      • healpy.projector.SphericalProj.get_extent
      • healpy.projector.SphericalProj.get_fov
      • healpy.projector.SphericalProj.ij2xy
      • healpy.projector.SphericalProj.projmap
      • healpy.projector.SphericalProj.set_flip
      • healpy.projector.SphericalProj.vec2xy
      • healpy.projector.SphericalProj.xy2ang
      • healpy.projector.SphericalProj.xy2ij
      • healpy.projector.SphericalProj.xy2vec
    • healpy.projector.GnomonicProj
      • healpy.projector.GnomonicProj.ang2xy
      • healpy.projector.GnomonicProj.get_center
      • healpy.projector.GnomonicProj.get_extent
      • healpy.projector.GnomonicProj.get_fov
      • healpy.projector.GnomonicProj.ij2xy
      • healpy.projector.GnomonicProj.projmap
      • healpy.projector.GnomonicProj.set_flip
      • healpy.projector.GnomonicProj.vec2xy
      • healpy.projector.GnomonicProj.xy2ang
      • healpy.projector.GnomonicProj.xy2ij
      • healpy.projector.GnomonicProj.xy2vec
    • healpy.projector.MollweideProj
      • healpy.projector.MollweideProj.ang2xy
      • healpy.projector.MollweideProj.get_center
      • healpy.projector.MollweideProj.get_extent
      • healpy.projector.MollweideProj.get_fov
      • healpy.projector.MollweideProj.ij2xy
      • healpy.projector.MollweideProj.projmap
      • healpy.projector.MollweideProj.set_flip
      • healpy.projector.MollweideProj.vec2xy
      • healpy.projector.MollweideProj.xy2ang
      • healpy.projector.MollweideProj.xy2ij
      • healpy.projector.MollweideProj.xy2vec
    • healpy.projector.CartesianProj
      • healpy.projector.CartesianProj.ang2xy
      • healpy.projector.CartesianProj.get_center
      • healpy.projector.CartesianProj.get_extent
      • healpy.projector.CartesianProj.get_fov
      • healpy.projector.CartesianProj.ij2xy
      • healpy.projector.CartesianProj.projmap
      • healpy.projector.CartesianProj.set_flip
      • healpy.projector.CartesianProj.vec2xy
      • healpy.projector.CartesianProj.xy2ang
      • healpy.projector.CartesianProj.xy2ij
      • healpy.projector.CartesianProj.xy2vec
  • zoomtool – Interactive visualisation
    • healpy.zoomtool.mollzoom
  • Line integral convolution
    • healpy.line_integral_convolution
  • Other functions
    • healpy.dist2holes
    • healpy.hotspots
  • Licenses
  • .rst

Other tutorials

Contents

  • Visualization
  • Pixelization
  • Harmonic Downgrade
  • Power spectra

Other tutorials#

Links to other tutorials about healpy

Visualization#

  • Example of using the alpha argument for transparency
  • New visualization function tutorial
  • Example of generating a Gaussian beam in spherical harmonics space

Pixelization#

  • Map data to a HEALPix grid.

Harmonic Downgrade#

  • harmonic_ud_grade vs ud_grade: A Focused Comparison

Power spectra#

  • Read and process Planck CMB power spectra

  • Compute Planck CMB Temperature power specrum with anafast

previous

healpy tutorial

next

Example of using the alpha argument for transparency

Contents
  • Visualization
  • Pixelization
  • Harmonic Downgrade
  • Power spectra

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Last updated on Jun 08, 2026.