healpy.projector.GnomonicProj

class healpy.projector.GnomonicProj(rot=None, coord=None, xsize=None, ysize=None, reso=None, **kwds)

This class provides class methods for Gnomonic projection.

Attributes
arrayinfo

Dictionary with information on the projection array

Methods

ang2xy(self, theta[, phi, lonlat, direct])

From angular direction to position in the projection plane (Gnomonic).

get_center(self[, lonlat])

Get the center of the projection.

get_extent(self)

Get the extension of the projection plane.

get_fov(self)

Get the field of view in degree of the plane of projection

ij2xy(self[, i, j])

From image array indices to position in projection plane (Gnomonic).

projmap(self, map, vec2pix_func[, rot, coord])

Create an array containing the projection of the map.

set_flip(self, flipconv)

flipconv is either ‘astro’ or ‘geo’.

vec2xy(self, vx[, vy, vz, direct])

From angular direction to position in the projection plane (Gnomonic).

xy2ang(self, x[, y, lonlat, direct])

From position in the projection plane to angular direction (Gnomonic).

xy2ij(self, x[, y])

From position in the projection plane to image array index (Gnomonic).

xy2vec(self, x[, y, direct])

From position in the projection plane to unit vector direction (Gnomonic).

get_proj_plane_info

mkcoord

set_proj_plane_info