ring_num

This function returns the ring number for a z coordinate.

Location in HEALPix directory tree: src/f90/mod/pix_tools.F90 

FORMAT

var=ring_num( nside, z )

ARGUMENTS

name&dimensionality	kind	in/out	description
nside	I4B	IN	the $N_{\mathrm{side}}$ parameter of the map.
z	DP	IN	the z coordinate to find the ring number for.

EXAMPLE:

print*,ring_num(256, 0.5)

Prints the ring number of the ring at position $z=0.5$.

MODULES & ROUTINES

This section lists the modules and routines used by ring_num.

None

RELATED ROUTINES

This section lists the routines related to ring_num

in_ring

Returns the pixels in a slice on a given ring.