nside2ntemplates

Function to provide the number of template pixels

$$N_{\mathrm{template}}=\frac{1+N_{\mathrm{side}}(N_{\mathrm{side}}+6)}{4}$$

corresponding to resolution parameter $N_{\mathrm{side}}$. Each template pixel has a different shape that can not be matched (by rotation or reflexion) to that of any of the other templates.

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

FORMAT

var=nside2ntemplates( nside )

ARGUMENTS

name & dimensionality	kind	in/out	description
nside	I4B	IN	the $N_{\mathrm{side}}$ parameter.
var	I8B	OUT	the number of template pixels $N_{\mathrm{template}}$.

EXAMPLE:

use healpix_modules
integer(I8B) :: ntpl
ntpl= nside2ntemplates(256)

Returns in ntpl the number of HEALPix template pixels (16768) for the resolution parameter 256.

RELATED ROUTINES

This section lists the routines related to nside2ntemplates

template_pixel_ring

template_pixel_nest

return the template pixel associated with any HEALPix pixel

same_shape_pixels_ring

same_shape_pixels_nest

return the ordered list of pixels having the same shape as a given pixel template