get_compass_info#
- jdaviz.configs.imviz.wcs_utils.get_compass_info(image_wcs, image_shape, r_fac=0.4)[source]#
Calculate WCS compass parameters. North (N) is up and East (E) is left.
- Parameters:
- image_wcsobj
WCS that is compatible with APE 14.
- image_shapetuple of int
Shape of the image in the form of
(ny, nx).- r_facfloat
Scale factor for compass arrow length.
- Returns:
- x, yfloat
Pixel positions for the center of the compass.
- xn, ynfloat
Pixel positions for N of the compass.
- xe, yefloat
Pixel positions for E of the compass.
- degn, degefloat
Rotation angles for N and E, in degrees, for the compass, respectively.
- xflipbool
Should display flip on X?