Subsections
The HEALPix-IDL tools are mostly designed to
generate, visualize, filter and analyze sky maps;
identify, query and process HEALPix pixels;
and deal with angular spectral objects (such as power spectra or Spherical
Harmonics coefficients),
as detailed below.
The full documentation is available online in IDL via healpix_doc
- Visualization: gnomic, Mollweide, Cartesian,
orthographic and azimuthal equatorial projections
mollview,
gnomview,
cartview,
orthview,
azeqview
(with interactive cursor:
cartcursor,
mollcursor,
gnomcursor,
orthcursor)
- Production of outlines for Earth continents, coastlines, countries and rivers
outline_earth
- Color table creation: planck_colors
- Production of HEALPix maps in Google Sky and Dome Master format:
hpx2gs,
hpx2dm.
- Spherical Harmonics analysis and synthesis:
ianafast,
isynfast.
- Smoothing and filtering:
ismoothing,
median_filter,
remove_dipole.
- Handling of quadrature weights:
nside2npweights,
unfold_weights.
- Pixel pro/down-grading and NESTED/RING pixel reordering:
ud_grade,
reorder.
- Mask processing:
iprocess_mask
- Maps I/O:
read_fits_cut4,
read_fits_map,
read_fits_partial,
read_fits_s,
read_tqu.
write_fits_cut4,
write_fits_map,
write_fits_partial,
write_fits_sb,
write_tqu.
getsize_fits,
change_polcconv
- Coordinate tools:
ang2vec,
angulardistance,
euler_matrix_new,
rotate_coord,
vec2ang
- Coordinates to pixel transforms, and back:
nside2npix, npix2nside,
ang2pix_*, pix2ang_*,
pix2vec_*, vec2pix_*
- RING/NESTED transforms:
nest2ring, ring2nest
- Unique Identifier to NESTED index, and back:
uniq2nest,
nest2uniq
- Neighbouring pixels:
neighbours_nest, neighbours_ring
- Pixel query within a disc, polygon, strip or triangle:
query_disc,
query_polygon,
query_strip,
query_triangle.
- Template pixels:
nside2ntemplates,
same_shape_pixels_ring,
same_shape_pixels_nest,
template_pixel_ring,
template_pixel_nest
- , and pixel WF generation:
gaussbeam,
beam2bl,
bl2beam,
healpixwindow
- binning:
bin_llcl
- handling tools:
alm_i2t,
alm_t2i,
index2lm,
lm2index,
ialteralm
- , and I/O:
fits2cl/cl2fits,
bl2fits,
fits2alm/alm2fits,
Version 3.82, 2022-07-28