15.5.67 c2ixys

c2ixys(x, y, s)

[SOFA] Returns the celestial-to-intermediate-frame-of-date matrix for Celestial Intermediate Pole coordinates x and y (components of the unit vector in the Geocentric Celestial Reference System) and Celestial Intermediate Origin locator s (in radians), which positions the Celestial Intermediate Origin on the equator of the Celestial Intermediate Pole. The three arguments must all have the same dimensions. The returned array has those same dimensions, too, but with two dimensions equal to 3 prefixed.

See also: c2ixy, Astronomical Coordinate Calculations