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nside2ntemplates
This IDL facility provides the number of template pixels Ntemplates corresponding
to resolution parameter Nside. 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/idl/toolkit/nside2ntemplates.pro
FORMAT IDL>
Ntemplates=NSIDE2NTEMPLATES (Nside [,ERROR=])
QUALIFIERS
-
Nside
- HEALPix resolution parameter (scalar integer),
should be a valid Nside (power of 2 in
)
-
Ntemplates
- number of templates
KEYWORDS
-
ERROR =
- error flag, set to 1 on output if Nside is NOT valid, or
stays to 0 otherwise.
DESCRIPTION
nside2ntemplates outputs the number of template pixels
RELATED ROUTINESThis section lists the routines related to nside2ntemplates
-
idl
- version 6.1 or more is necessary to run 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
EXAMPLE:
Ntemplates will be 16768 the number of template pixels for the HEALPix
resolution parameter 256 and error will be 0
Eric Hivon
2010-06-18
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