ROUTINES:
pix2ang_ring, nside, ipring, theta, phi
renders theta and phi coordinates of the nominal pixel center given the pixel number ipring and a map resolution parameter nside. |
renders cartesian vector coordinates of the nominal pixel center given the pixel number ipring and a map resolution parameter nside. Optionally returns the location of the 4 vertices for the pixel(s) under consideration |
renders the pixel number ipring for a pixel which, given the map resolution parameter nside, contains the point on the sphere at angular coordinates theta and phi. |
renders the pixel number ipring for a pixel which, given the map resolution parameter nside, contains the point on the sphere at cartesian coordinates vector. |
renders theta and phi coordinates of the nominal pixel center given the pixel number ipnest and a map resolution parameter nside. |
renders cartesian vector coordinates of the nominal pixel center given the pixel number ipnest and a map resolution parameter nside. Optionally returns the location of the 4 vertices for the pixel(s) under consideration |
renders the pixel number ipnest for a pixel which, given the map resolution parameter nside, contains the point on the sphere at angular coordinates theta and phi. |
renders the pixel number ipnest for a pixel which, given the map resolution parameter nside, contains the point on the sphere at cartesian coordinates vector. |
performs conversion from NESTED to RING pixel number. |
performs conversion from RING to NESTED pixel number. |
pix2ang_ring, 256, [17,1000], theta, phi | |
print,theta,phi |
returns
0.0095683558 0.070182078
2.8797933 5.4620872
position of the two pixels #17 and 1000 in the RING scheme with parameter Nside=256.
Version 3.82, 2022-07-28