nest2ring: Convert nest to ring ordering
In rcosmo: Cosmic Microwave Background Data Analysis

Convert from "nested" to "ring" ordering

nest2ring computes the HEALPix pixel index in the "ring" ordering scheme from the pixel index in the "nested" ordering scheme.

1	nest2ring(nside, pix)

`nside`	is the HEALPix nside parameter.
`pix`	is the set or subset of pixel indices at nside. If pix is left blank then all pixels are converted.

the output is the corresponding set of pixel in the ring ordering scheme.

# compute HEALPix indices in the ring ordering scheme
nside <- 8
pix <-c(1,2,23)
nest2ring(nside,pix)

rcosmo documentation built on Dec. 11, 2021, 9:29 a.m.

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