| 8 | 8 | import numpy as np |
| 9 | 9 | import erfa |
| 10 | 10 | |
| 11 | from astropy import units as u | |
| 11 | 12 | from astropy.coordinates.baseframe import frame_transform_graph |
| 12 | 13 | from astropy.coordinates.transformations import FunctionTransformWithFiniteDifference |
| 13 | 14 | from astropy.coordinates.matrix_utilities import matrix_transpose |
| 17 | 18 | from .cirs import CIRS |
| 18 | 19 | from .itrs import ITRS |
| 19 | 20 | from .equatorial import TEME, TETE |
| 20 | from .utils import get_polar_motion, get_jd12, EARTH_CENTER | |
| 21 | from .altaz import AltAz | |
| 22 | from .hadec import HADec | |
| 23 | from .utils import get_polar_motion, get_jd12, EARTH_CENTER, PIOVER2 | |
| 24 | from astropy.coordinates.matrix_utilities import rotation_matrix | |
| 21 | 25 | |
| 22 | 26 | # # first define helper functions |
| 23 | 27 | |
| 92 | 96 | return erfa.fw2m(gamb, phib, psib, epsa) |
| 93 | 97 | |
| 94 | 98 | |
| 99 | def itrs_to_observed_mat(observed_frame): | |
| 100 | lon, lat, height = observed_frame.location.to_geodetic('WGS84') | |
| 101 | elong = lon.to_value(u.radian) | |
| 102 | ||
| 103 | if isinstance(observed_frame, AltAz): | |
| 104 | # form ITRS to AltAz matrix | |
| 105 | elat = lat.to_value(u.radian) | |
| 106 | # AltAz frame is left handed | |
| 107 | minus_x = np.eye(3) | |
| 108 | minus_x[0][0] = -1.0 | |
| 109 | mat = (minus_x | |
| 110 | @ rotation_matrix(PIOVER2 - elat, 'y', unit=u.radian) | |
| 111 | @ rotation_matrix(elong, 'z', unit=u.radian)) | |
| 112 | ||
| 113 | else: | |
| 114 | # form ITRS to HADec matrix | |
| 115 | # HADec frame is left handed | |
| 116 | minus_y = np.eye(3) | |
| 117 | minus_y[1][1] = -1.0 | |
| 118 | mat = (minus_y | |
| 119 | @ rotation_matrix(elong, 'z', unit=u.radian)) | |
| 120 | return mat | |
| 121 | ||
| 122 | ||
| 95 | 123 | def get_location_gcrs(location, obstime, ref_to_itrs, gcrs_to_ref): |
| 96 | 124 | """Create a GCRS frame at the location and obstime. |
| 97 | 125 | |
| 272 | 300 | return teme_frame.realize_frame(newrepr) |
| 273 | 301 | |
| 274 | 302 | |
| 303 | @frame_transform_graph.transform(FunctionTransformWithFiniteDifference, ITRS, AltAz) | |
| 304 | @frame_transform_graph.transform(FunctionTransformWithFiniteDifference, ITRS, HADec) | |
| 305 | def itrs_to_observed(itrs_coo, observed_frame): | |
| 306 | # Trying to synchronize the obstimes here makes no sense. In fact, | |
| 307 | # it's a real gotcha as doing an ITRS->ITRS transform references | |
| 308 | # ITRS coordinates, which should be tied to the Earth, to the SSB. | |
| 309 | # Instead, we treat ITRS coordinates as time invariant here. | |
| 310 | ||
| 311 | # form the Topocentric ITRS position | |
| 312 | topocentric_itrs_repr = (itrs_coo.cartesian | |
| 313 | - observed_frame.location.get_itrs().cartesian) | |
| 314 | rep = topocentric_itrs_repr.transform(itrs_to_observed_mat(observed_frame)) | |
| 315 | return observed_frame.realize_frame(rep) | |
| 316 | ||
| 317 | ||
| 318 | @frame_transform_graph.transform(FunctionTransformWithFiniteDifference, AltAz, ITRS) | |
| 319 | @frame_transform_graph.transform(FunctionTransformWithFiniteDifference, HADec, ITRS) | |
| 320 | def observed_to_itrs(observed_coo, itrs_frame): | |
| 321 | ||
| 322 | # form the Topocentric ITRS position | |
| 323 | topocentric_itrs_repr = observed_coo.cartesian.transform(matrix_transpose( | |
| 324 | itrs_to_observed_mat(observed_coo))) | |
| 325 | # form the Geocentric ITRS position | |
| 326 | rep = topocentric_itrs_repr + observed_coo.location.get_itrs().cartesian | |
| 327 | return itrs_frame.realize_frame(rep) | |
| 328 | ||
| 329 | ||
| 275 | 330 | # Create loopback transformations |
| 276 | 331 | frame_transform_graph._add_merged_transform(ITRS, CIRS, ITRS) |
| 277 | 332 | frame_transform_graph._add_merged_transform(PrecessedGeocentric, GCRS, PrecessedGeocentric) |
| 278 | 333 | frame_transform_graph._add_merged_transform(TEME, ITRS, TEME) |
| 279 | 334 | frame_transform_graph._add_merged_transform(TETE, ICRS, TETE) |
| 335 | frame_transform_graph._add_merged_transform(ITRS, AltAz, ITRS) | |
| 336 | frame_transform_graph._add_merged_transform(ITRS, HADec, ITRS) |
| Test Name | Status |
|---|---|
astropy/coordinates/tests/test_intermediate_transformations.py::test_itrs_topo_to_altaz_with_refraction | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_itrs_topo_to_hadec_with_refraction | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_itrs_topo | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_itrs_straight_overhead | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrs[icoo0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrs[icoo1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrs_dist_diff[gframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrs_dist_diff[gframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_to_altaz | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_to_hadec | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_itrs | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_itrs | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_cirs | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_hadec | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_precessed_geocentric | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_precessed_geocentric_different_obstime | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_sunish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_sunish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_sunish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_sunish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_sunish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_moonish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_moonish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_moonish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_moonish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_moonish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_bothroutes[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_bothroutes[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_bothroutes[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_bothroutes[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_altaz_bothroutes[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_moonish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_moonish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_moonish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_moonish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_moonish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_nodist[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_nodist[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_nodist[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_nodist[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_altaz_nodist[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_icrs_moonish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_icrs_moonish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_icrs_moonish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_icrs_moonish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_cirs_icrs_moonish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_icrs_moonish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_icrs_moonish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_icrs_moonish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_icrs_moonish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_icrs_moonish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrscirs_sunish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrscirs_sunish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrscirs_sunish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrscirs_sunish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_gcrscirs_sunish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_altaz_moonish[testframe0] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_altaz_moonish[testframe1] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_altaz_moonish[testframe2] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_altaz_moonish[testframe3] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_icrs_altaz_moonish[testframe4] | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_gcrs_self_transform_closeby | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_teme_itrf | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_precessedgeocentric_loopback | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_teme_loopback | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_tete_transforms | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_straight_overhead | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::test_aa_high_precision_nodata | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::TestGetLocationGCRS::test_get_gcrs_posvel | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::TestGetLocationGCRS::test_tete_quick | Fail |
astropy/coordinates/tests/test_intermediate_transformations.py::TestGetLocationGCRS::test_cirs_quick | Fail |
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