Description Usage Arguments Value Examples

Gives the surface on the unit sphere
that is encompassed by all pixels in `x`

.

1 2 | ```
## S3 method for class 'HPDataFrame'
geoArea(x)
``` |

`x` |
A HPDataFrame. |

The sum of the areas of all pixels (rows) in `x`

.

1 2 3 4 5 6 7 8 9 10 | ```
## Generate random I for HPDataFrame
hp1 <- HPDataFrame(I=rnorm(5), nside = 1, spix = c(1,1,2,2,3))
pix(hp1)
## The total number of Healpix points at nside=1 equals 12. As hp1 has five
## I values at 3 Healpix points, then the occupied area is
## pi = 1/4*(surface area of unit sphere)
geoArea(hp1)
plot(hp1, size = 5, hp.boundaries = 1)
``` |

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